400630959 has 24 divisors (see below), whose sum is σ = 614092752. Its totient is φ = 250817280.

The previous prime is 400630939. The next prime is 400630999. The reversal of 400630959 is 959036004.

It is not a de Polignac number, because 400630959 - 2⁵ = 400630927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400630939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72457 + ... + 77789.

It is an arithmetic number, because the mean of its divisors is an integer number (25587198).

Almost surely, 2^400630959 is an apocalyptic number.

400630959 is a deficient number, since it is larger than the sum of its proper divisors (213461793).

400630959 is a wasteful number, since it uses less digits than its factorization.

400630959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847 (or 5844 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 400630959 is about 20015.7677594441. The cubic root of 400630959 is about 737.1935083438.

The spelling of 400630959 in words is "four hundred million, six hundred thirty thousand, nine hundred fifty-nine".