400336667 has 2 divisors, whose sum is σ = 400336668. Its totient is φ = 400336666.

The previous prime is 400336663. The next prime is 400336693. The reversal of 400336667 is 766633004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400336667 - 2² = 400336663 is a prime.

It is not a weakly prime, because it can be changed into another prime (400336661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200168333 + 200168334.

It is an arithmetic number, because the mean of its divisors is an integer number (200168334).

Almost surely, 2^400336667 is an apocalyptic number.

400336667 is a deficient number, since it is larger than the sum of its proper divisors (1).

400336667 is an equidigital number, since it uses as much as digits as its factorization.

400336667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 400336667 is about 20008.4149047345. The cubic root of 400336667 is about 737.0129570654.

The spelling of 400336667 in words is "four hundred million, three hundred thirty-six thousand, six hundred sixty-seven".