400444480408 has 32 divisors (see below), whose sum is σ = 859742393760. Its totient is φ = 171289647360.

The previous prime is 400444480391. The next prime is 400444480421. The reversal of 400444480408 is 804084444004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6833391 + ... + 6891742.

It is an arithmetic number, because the mean of its divisors is an integer number (26866949805).

Almost surely, 2^400444480408 is an apocalyptic number.

It is an amenable number.

400444480408 is an abundant number, since it is smaller than the sum of its proper divisors (459297913352).

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

400444480408 is a wasteful number, since it uses less digits than its factorization.

400444480408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13725667 (or 13725663 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 40.

The spelling of 400444480408 in words is "four hundred billion, four hundred forty-four million, four hundred eighty thousand, four hundred eight".