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438084061 = 538265737
BaseRepresentation
bin11010000111001…
…010000111011101
31010112022222100121
4122013022013131
51344122142221
6111245354541
713566440002
oct3207120735
91115288317
10438084061
11205318048
12102868a51
136c9b704c
14422798a9
15286d7a41
hex1a1ca1dd

438084061 has 4 divisors (see below), whose sum is σ = 446349852. Its totient is φ = 429818272.

The previous prime is 438084019. The next prime is 438084103. The reversal of 438084061 is 160480834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160480834 = 280240417.

It is an interprime number because it is at equal distance from previous prime (438084019) and next prime (438084103).

It can be written as a sum of positive squares in 2 ways, for example, as 184796836 + 253287225 = 13594^2 + 15915^2 .

It is a cyclic number.

It is not a de Polignac number, because 438084061 - 211 = 438082013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438084011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4132816 + ... + 4132921.

It is an arithmetic number, because the mean of its divisors is an integer number (111587463).

Almost surely, 2438084061 is an apocalyptic number.

It is an amenable number.

438084061 is a deficient number, since it is larger than the sum of its proper divisors (8265791).

438084061 is an equidigital number, since it uses as much as digits as its factorization.

438084061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265790.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 438084061 is about 20930.4577350807. The cubic root of 438084061 is about 759.4849124065.

The spelling of 438084061 in words is "four hundred thirty-eight million, eighty-four thousand, sixty-one".

Divisors: 1 53 8265737 438084061