402850979 has 2 divisors, whose sum is σ = 402850980. Its totient is φ = 402850978.

The previous prime is 402850951. The next prime is 402850993. The reversal of 402850979 is 979058204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402850979 - 2²⁴ = 386073763 is a prime.

It is a super-2 number, since 2×402850979² = 324577822562516882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402852979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201425489 + 201425490.

It is an arithmetic number, because the mean of its divisors is an integer number (201425490).

Almost surely, 2^402850979 is an apocalyptic number.

402850979 is a deficient number, since it is larger than the sum of its proper divisors (1).

402850979 is an equidigital number, since it uses as much as digits as its factorization.

402850979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 402850979 is about 20071.1479243216. The cubic root of 402850979 is about 738.5526732874.

The spelling of 402850979 in words is "four hundred two million, eight hundred fifty thousand, nine hundred seventy-nine".