400802959 has 2 divisors, whose sum is σ = 400802960. Its totient is φ = 400802958.

The previous prime is 400802951. The next prime is 400803019. The reversal of 400802959 is 959208004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400802959 - 2³ = 400802951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400802951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200401479 + 200401480.

It is an arithmetic number, because the mean of its divisors is an integer number (200401480).

Almost surely, 2^400802959 is an apocalyptic number.

400802959 is a deficient number, since it is larger than the sum of its proper divisors (1).

400802959 is an equidigital number, since it uses as much as digits as its factorization.

400802959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 400802959 is about 20020.0639109869. The cubic root of 400802959 is about 737.2989912404.

The spelling of 400802959 in words is "four hundred million, eight hundred two thousand, nine hundred fifty-nine".