400912897 has 8 divisors (see below), whose sum is σ = 499839552. Its totient is φ = 312399600.

The previous prime is 400912859. The next prime is 400912909. The reversal of 400912897 is 798219004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400912897 - 2⁷ = 400912769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400912297) 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, 2603254 + ... + 2603407.

It is an arithmetic number, because the mean of its divisors is an integer number (62479944).

Almost surely, 2^400912897 is an apocalyptic number.

It is an amenable number.

400912897 is a deficient number, since it is larger than the sum of its proper divisors (98926655).

400912897 is a wasteful number, since it uses less digits than its factorization.

400912897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206679.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 400912897 is about 20022.8094182610. The cubic root of 400912897 is about 737.3663974015.

The spelling of 400912897 in words is "four hundred million, nine hundred twelve thousand, eight hundred ninety-seven".