400869475 has 24 divisors (see below), whose sum is σ = 511842240. Its totient is φ = 311301120.

The previous prime is 400869473. The next prime is 400869493. The reversal of 400869475 is 574968004.

It is not a de Polignac number, because 400869475 - 2¹ = 400869473 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (400869473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126966 + ... + 130084.

It is an arithmetic number, because the mean of its divisors is an integer number (21326760).

Almost surely, 2^400869475 is an apocalyptic number.

400869475 is a deficient number, since it is larger than the sum of its proper divisors (110972765).

400869475 is a wasteful number, since it uses less digits than its factorization.

400869475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 400869475 is about 20021.7250755273. The cubic root of 400869475 is about 737.3397755925.

The spelling of 400869475 in words is "four hundred million, eight hundred sixty-nine thousand, four hundred seventy-five".