400744368 has 40 divisors (see below), whose sum is σ = 1150286000. Its totient is φ = 133581312.

The previous prime is 400744363. The next prime is 400744411. The reversal of 400744368 is 863447004.

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

It is not an unprimeable number, because it can be changed into a prime (400744361) 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, 463393 + ... + 464256.

It is an arithmetic number, because the mean of its divisors is an integer number (28757150).

Almost surely, 2^400744368 is an apocalyptic number.

400744368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

400744368 is an abundant number, since it is smaller than the sum of its proper divisors (749541632).

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

400744368 is a wasteful number, since it uses less digits than its factorization.

400744368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927666 (or 927654 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 400744368 is about 20018.6005504880. The cubic root of 400744368 is about 737.2630623720.

The spelling of 400744368 in words is "four hundred million, seven hundred forty-four thousand, three hundred sixty-eight".