402947944000 has 224 divisors, whose sum is σ = 1159163665920. Its totient is φ = 135887616000.

The previous prime is 402947943997. The next prime is 402947944027. The reversal of 402947944000 is 449749204.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3357021 + ... + 3474979.

Almost surely, 2^402947944000 is an apocalyptic number.

402947944000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402947944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579581832960).

402947944000 is an abundant number, since it is smaller than the sum of its proper divisors (756215721920).

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

402947944000 is a wasteful number, since it uses less digits than its factorization.

402947944000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118054 (or 118034 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 402947944000 in words is "four hundred two billion, nine hundred forty-seven million, nine hundred forty-four thousand".