401607855 has 32 divisors (see below), whose sum is σ = 778878720. Its totient is φ = 194718240.

The previous prime is 401607851. The next prime is 401607859. The reversal of 401607855 is 558706104.

401607855 is a `hidden beast` number, since 40 + 1 + 607 + 8 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (401607851) and next prime (401607859).

It is not a de Polignac number, because 401607855 - 2² = 401607851 is a prime.

It is a super-2 number, since 2×401607855² = 322577738395402050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401607851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133737 + ... + 136706.

It is an arithmetic number, because the mean of its divisors is an integer number (24339960).

Almost surely, 2^401607855 is an apocalyptic number.

401607855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

401607855 is a deficient number, since it is larger than the sum of its proper divisors (377270865).

401607855 is a wasteful number, since it uses less digits than its factorization.

401607855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270468 (or 270462 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 401607855 is about 20040.1560622666. The cubic root of 401607855 is about 737.7922113142.

The spelling of 401607855 in words is "four hundred one million, six hundred seven thousand, eight hundred fifty-five".