402798879 has 64 divisors (see below), whose sum is σ = 722534400. Its totient is φ = 216647136.

The previous prime is 402798859. The next prime is 402798911. The reversal of 402798879 is 978897204.

It is not a de Polignac number, because 402798879 - 2⁸ = 402798623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402798859) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 800542 + ... + 801044.

It is an arithmetic number, because the mean of its divisors is an integer number (11289600).

Almost surely, 2^402798879 is an apocalyptic number.

402798879 is a deficient number, since it is larger than the sum of its proper divisors (319735521).

402798879 is a wasteful number, since it uses less digits than its factorization.

402798879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 402798879 is about 20069.8499994395. The cubic root of 402798879 is about 738.5208333473.

The spelling of 402798879 in words is "four hundred two million, seven hundred ninety-eight thousand, eight hundred seventy-nine".