402088017990 has 16 divisors (see below), whose sum is σ = 965011243248. Its totient is φ = 107223471456.

The previous prime is 402088017983. The next prime is 402088018021. The reversal of 402088017990 is 99710880204.

It is a super-2 number, since 2×402088017990² (a number of 24 digits) contains 22 as substring.

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, 6701466937 + ... + 6701466996.

It is an arithmetic number, because the mean of its divisors is an integer number (60313202703).

Almost surely, 2^402088017990 is an apocalyptic number.

402088017990 is an abundant number, since it is smaller than the sum of its proper divisors (562923225258).

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

402088017990 is a wasteful number, since it uses less digits than its factorization.

402088017990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13402933943.

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 402088017990 in words is "four hundred two billion, eighty-eight million, seventeen thousand, nine hundred ninety".