402899346 has 28 divisors (see below), whose sum is σ = 906112302. Its totient is φ = 134299296.

The previous prime is 402899309. The next prime is 402899363. The reversal of 402899346 is 643998204.

It can be written as a sum of positive squares in only one way, i.e., 402443721 + 455625 = 20061^2 + 675^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 136711 + ... + 139626.

Almost surely, 2^402899346 is an apocalyptic number.

402899346 is an abundant number, since it is smaller than the sum of its proper divisors (503212956).

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

402899346 is an equidigital number, since it uses as much as digits as its factorization.

402899346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276357 (or 276342 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 402899346 is about 20072.3527768919. The cubic root of 402899346 is about 738.5822294173.

The spelling of 402899346 in words is "four hundred two million, eight hundred ninety-nine thousand, three hundred forty-six".