400446008 has 16 divisors (see below), whose sum is σ = 783481680. Its totient is φ = 191517568.

The previous prime is 400446001. The next prime is 400446017. The reversal of 400446008 is 800644004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400446001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087985 + ... + 1088352.

It is an arithmetic number, because the mean of its divisors is an integer number (48967605).

Almost surely, 2^400446008 is an apocalyptic number.

It is an amenable number.

400446008 is a deficient number, since it is larger than the sum of its proper divisors (383035672).

400446008 is a wasteful number, since it uses less digits than its factorization.

400446008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176366 (or 2176362 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 400446008 is about 20011.1470935576. The cubic root of 400446008 is about 737.0800492613.

The spelling of 400446008 in words is "four hundred million, four hundred forty-six thousand, eight".