402109944 has 32 divisors (see below), whose sum is σ = 1007473920. Its totient is φ = 133743456.

The previous prime is 402109931. The next prime is 402109951. The reversal of 402109944 is 449901204.

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, 6982 + ... + 29205.

It is an arithmetic number, because the mean of its divisors is an integer number (31483560).

Almost surely, 2^402109944 is an apocalyptic number.

It is an amenable number.

402109944 is an abundant number, since it is smaller than the sum of its proper divisors (605363976).

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

402109944 is a wasteful number, since it uses less digits than its factorization.

402109944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36659 (or 36655 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 402109944 is about 20052.6792224880. The cubic root of 402109944 is about 738.0995451830.

The spelling of 402109944 in words is "four hundred two million, one hundred nine thousand, nine hundred forty-four".