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445139 = 2771607
BaseRepresentation
bin1101100101011010011
3211121121122
41230223103
5103221024
613312455
73532532
oct1545323
9747548
10445139
11284492
1219572b
131277c6
14b8319
158bd5e
hex6cad3

445139 has 4 divisors (see below), whose sum is σ = 447024. Its totient is φ = 443256.

The previous prime is 445103. The next prime is 445141. The reversal of 445139 is 931544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445139 - 28 = 444883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527 + ... + 1080.

It is an arithmetic number, because the mean of its divisors is an integer number (111756).

2445139 is an apocalyptic number.

445139 is a deficient number, since it is larger than the sum of its proper divisors (1885).

445139 is a wasteful number, since it uses less digits than its factorization.

445139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its digits is 2160, while the sum is 26.

The square root of 445139 is about 667.1873799766. The cubic root of 445139 is about 76.3540155285.

The spelling of 445139 in words is "four hundred forty-five thousand, one hundred thirty-nine".

Divisors: 1 277 1607 445139