402951996 has 90 divisors (see below), whose sum is σ = 1101655632. Its totient is φ = 128422800.

The previous prime is 402951959. The next prime is 402952001. The reversal of 402951996 is 699159204.

402951996 is a `hidden beast` number, since 40 + 2 + 9 + 519 + 96 = 666.

It is a super-2 number, since 2×402951996² = 324740622160768032, which 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 29 ways as a sum of consecutive naturals, for example, 170221 + ... + 172571.

Almost surely, 2^402951996 is an apocalyptic number.

402951996 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

402951996 is the 12696-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402951996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550827816).

402951996 is an abundant number, since it is smaller than the sum of its proper divisors (698703636).

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

402951996 is a wasteful number, since it uses less digits than its factorization.

402951996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 402951996 is about 20073.6642394955. The cubic root of 402951996 is about 738.6144001162.

The spelling of 402951996 in words is "four hundred two million, nine hundred fifty-one thousand, nine hundred ninety-six".