402652979 has 2 divisors, whose sum is σ = 402652980. Its totient is φ = 402652978.

The previous prime is 402652961. The next prime is 402653047. The reversal of 402652979 is 979256204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402652979 is a prime.

It is not a weakly prime, because it can be changed into another prime (402652909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201326489 + 201326490.

It is an arithmetic number, because the mean of its divisors is an integer number (201326490).

Almost surely, 2^402652979 is an apocalyptic number.

402652979 is a deficient number, since it is larger than the sum of its proper divisors (1).

402652979 is an equidigital number, since it uses as much as digits as its factorization.

402652979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 402652979 is about 20066.2148647920. The cubic root of 402652979 is about 738.4316546798.

The spelling of 402652979 in words is "four hundred two million, six hundred fifty-two thousand, nine hundred seventy-nine".