402412988 has 12 divisors (see below), whose sum is σ = 714733992. Its totient is φ = 198203280.

The previous prime is 402412973. The next prime is 402413003. The reversal of 402412988 is 889214204.

It is an interprime number because it is at equal distance from previous prime (402412973) and next prime (402413003).

It is a super-2 number, since 2×402412988² = 323872425822176288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750503 + ... + 751038.

It is an arithmetic number, because the mean of its divisors is an integer number (59561166).

Almost surely, 2^402412988 is an apocalyptic number.

It is an amenable number.

402412988 is a deficient number, since it is larger than the sum of its proper divisors (312321004).

402412988 is a wasteful number, since it uses less digits than its factorization.

402412988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501612 (or 1501610 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 402412988 is about 20060.2339966412. The cubic root of 402412988 is about 738.2849177619.

The spelling of 402412988 in words is "four hundred two million, four hundred twelve thousand, nine hundred eighty-eight".