400565950 has 12 divisors (see below), whose sum is σ = 745052760. Its totient is φ = 160226360.

The previous prime is 400565947. The next prime is 400565969. The reversal of 400565950 is 59565004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4005610 + ... + 4005709.

It is an arithmetic number, because the mean of its divisors is an integer number (62087730).

Almost surely, 2^400565950 is an apocalyptic number.

400565950 is a deficient number, since it is larger than the sum of its proper divisors (344486810).

400565950 is a wasteful number, since it uses less digits than its factorization.

400565950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8011331 (or 8011326 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 400565950 is about 20014.1437488592. The cubic root of 400565950 is about 737.1536322400.

The spelling of 400565950 in words is "four hundred million, five hundred sixty-five thousand, nine hundred fifty".