400392576 has 48 divisors (see below), whose sum is σ = 1152174660. Its totient is φ = 133463808.

The previous prime is 400392571. The next prime is 400392617. The reversal of 400392576 is 675293004.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 400392576.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400392571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172630 + ... + 174933.

Almost surely, 2^400392576 is an apocalyptic number.

It is an amenable number.

400392576 is an abundant number, since it is smaller than the sum of its proper divisors (751782084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400392576 is a wasteful number, since it uses less digits than its factorization.

400392576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347583 (or 347568 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 400392576 is about 20009.8119931198. The cubic root of 400392576 is about 737.0472646393.

It can be divided in two parts, 4003925 and 76, that added together give a square (4004001 = 2001²).

The spelling of 400392576 in words is "four hundred million, three hundred ninety-two thousand, five hundred seventy-six".