400474857 has 16 divisors (see below), whose sum is σ = 538951680. Its totient is φ = 264502800.

The previous prime is 400474793. The next prime is 400474859. The reversal of 400474857 is 758474004.

It is not a de Polignac number, because 400474857 - 2⁶ = 400474793 is a prime.

It is a super-2 number, since 2×400474857² = 320760222178340898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400474859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153994 + ... + 156572.

It is an arithmetic number, because the mean of its divisors is an integer number (33684480).

Almost surely, 2^400474857 is an apocalyptic number.

It is an amenable number.

400474857 is a deficient number, since it is larger than the sum of its proper divisors (138476823).

400474857 is a wasteful number, since it uses less digits than its factorization.

400474857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 400474857 is about 20011.8679038215. The cubic root of 400474857 is about 737.0977491187.

The spelling of 400474857 in words is "four hundred million, four hundred seventy-four thousand, eight hundred fifty-seven".