400577364 has 36 divisors (see below), whose sum is σ = 1104623520. Its totient is φ = 121386960.

The previous prime is 400577363. The next prime is 400577371. The reversal of 400577364 is 463775004.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400577363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505384 + ... + 506175.

Almost surely, 2^400577364 is an apocalyptic number.

400577364 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400577364 is an abundant number, since it is smaller than the sum of its proper divisors (704046156).

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

400577364 is a wasteful number, since it uses less digits than its factorization.

400577364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011580 (or 1011575 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 400577364 is about 20014.4288951746. The cubic root of 400577364 is about 737.1606338266.

The spelling of 400577364 in words is "four hundred million, five hundred seventy-seven thousand, three hundred sixty-four".