400315667 has 4 divisors (see below), whose sum is σ = 417720720. Its totient is φ = 382910616.

The previous prime is 400315661. The next prime is 400315753. The reversal of 400315667 is 766513004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400315667 - 2⁶ = 400315603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400315661) 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, 8702492 + ... + 8702537.

It is an arithmetic number, because the mean of its divisors is an integer number (104430180).

Almost surely, 2^400315667 is an apocalyptic number.

400315667 is a deficient number, since it is larger than the sum of its proper divisors (17405053).

400315667 is a wasteful number, since it uses less digits than its factorization.

400315667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17405052.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 400315667 is about 20007.8901186507. The cubic root of 400315667 is about 737.0000699598. Note that the first 4 decimals are identical.

The spelling of 400315667 in words is "four hundred million, three hundred fifteen thousand, six hundred sixty-seven".