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440105401 = 1742161493
BaseRepresentation
bin11010001110110…
…111100110111001
31010200010200010001
4122032313212321
51400131333101
6111400553001
713622556061
oct3216674671
91120120101
10440105401
1120647877a
12103482761
13702440c8
14426443a1
1528986901
hex1a3b79b9

440105401 has 8 divisors (see below), whose sum is σ = 467108424. Its totient is φ = 413226240.

The previous prime is 440105381. The next prime is 440105411. The reversal of 440105401 is 104501044.

It can be written as a sum of positive squares in 4 ways, for example, as 96040000 + 344065401 = 9800^2 + 18549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 440105401 - 217 = 439974329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440105411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23590 + ... + 37903.

It is an arithmetic number, because the mean of its divisors is an integer number (58388553).

Almost surely, 2440105401 is an apocalyptic number.

It is an amenable number.

440105401 is a deficient number, since it is larger than the sum of its proper divisors (27003023).

440105401 is a wasteful number, since it uses less digits than its factorization.

440105401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61931.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 440105401 is about 20978.6892107205. The cubic root of 440105401 is about 760.6512198781.

Adding to 440105401 its reverse (104501044), we get a palindrome (544606445).

The spelling of 440105401 in words is "four hundred forty million, one hundred five thousand, four hundred one".

Divisors: 1 17 421 7157 61493 1045381 25888553 440105401