402659291 has 2 divisors, whose sum is σ = 402659292. Its totient is φ = 402659290.

The previous prime is 402659261. The next prime is 402659339. The reversal of 402659291 is 192956204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402659291 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402659251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201329645 + 201329646.

It is an arithmetic number, because the mean of its divisors is an integer number (201329646).

Almost surely, 2^402659291 is an apocalyptic number.

402659291 is a deficient number, since it is larger than the sum of its proper divisors (1).

402659291 is an equidigital number, since it uses as much as digits as its factorization.

402659291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 402659291 is about 20066.3721434643. The cubic root of 402659291 is about 738.4355132185.

The spelling of 402659291 in words is "four hundred two million, six hundred fifty-nine thousand, two hundred ninety-one".