400695504 has 40 divisors (see below), whose sum is σ = 1129234272. Its totient is φ = 121422720.

The previous prime is 400695499. The next prime is 400695509. The reversal of 400695504 is 405596004.

It is an interprime number because it is at equal distance from previous prime (400695499) and next prime (400695509).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400695509) 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, 378919 + ... + 379974.

Almost surely, 2^400695504 is an apocalyptic number.

400695504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400695504 is an abundant number, since it is smaller than the sum of its proper divisors (728538768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400695504 is a wasteful number, since it uses less digits than its factorization.

400695504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758915 (or 758909 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 400695504 is about 20017.3800483480. The cubic root of 400695504 is about 737.2330955656.

The spelling of 400695504 in words is "four hundred million, six hundred ninety-five thousand, five hundred four".