400374959 has 2 divisors, whose sum is σ = 400374960. Its totient is φ = 400374958.

The previous prime is 400374943. The next prime is 400375033. The reversal of 400374959 is 959473004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400374959 - 2⁴ = 400374943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400374929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200187479 + 200187480.

It is an arithmetic number, because the mean of its divisors is an integer number (200187480).

Almost surely, 2^400374959 is an apocalyptic number.

400374959 is a deficient number, since it is larger than the sum of its proper divisors (1).

400374959 is an equidigital number, since it uses as much as digits as its factorization.

400374959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 400374959 is about 20009.3717792438. The cubic root of 400374959 is about 737.0364546220.

The spelling of 400374959 in words is "four hundred million, three hundred seventy-four thousand, nine hundred fifty-nine".