402063979 has 2 divisors, whose sum is σ = 402063980. Its totient is φ = 402063978.

The previous prime is 402063973. The next prime is 402064007. The reversal of 402063979 is 979360204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402063979 - 2³ = 402063971 is a prime.

It is not a weakly prime, because it can be changed into another prime (402063971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201031989 + 201031990.

It is an arithmetic number, because the mean of its divisors is an integer number (201031990).

Almost surely, 2^402063979 is an apocalyptic number.

402063979 is a deficient number, since it is larger than the sum of its proper divisors (1).

402063979 is an equidigital number, since it uses as much as digits as its factorization.

402063979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 402063979 is about 20051.5330835325. The cubic root of 402063979 is about 738.0714201732.

The spelling of 402063979 in words is "four hundred two million, sixty-three thousand, nine hundred seventy-nine".