400946972 has 24 divisors (see below), whose sum is σ = 750299760. Its totient is φ = 186809600.

The previous prime is 400946951. The next prime is 400946977. The reversal of 400946972 is 279649004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400946977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22322 + ... + 36057.

It is an arithmetic number, because the mean of its divisors is an integer number (31262490).

Almost surely, 2^400946972 is an apocalyptic number.

It is an amenable number.

400946972 is a deficient number, since it is larger than the sum of its proper divisors (349352788).

400946972 is a wasteful number, since it uses less digits than its factorization.

400946972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58501 (or 58499 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 400946972 is about 20023.6603047495. The cubic root of 400946972 is about 737.3872872659.

The spelling of 400946972 in words is "four hundred million, nine hundred forty-six thousand, nine hundred seventy-two".