402790793 has 2 divisors, whose sum is σ = 402790794. Its totient is φ = 402790792.

The previous prime is 402790777. The next prime is 402790849. The reversal of 402790793 is 397097204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321556624 + 81234169 = 17932^2 + 9013^2 .

It is a cyclic number.

It is not a de Polignac number, because 402790793 - 2⁴ = 402790777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402790793.

It is not a weakly prime, because it can be changed into another prime (402790723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201395396 + 201395397.

It is an arithmetic number, because the mean of its divisors is an integer number (201395397).

Almost surely, 2^402790793 is an apocalyptic number.

It is an amenable number.

402790793 is a deficient number, since it is larger than the sum of its proper divisors (1).

402790793 is an equidigital number, since it uses as much as digits as its factorization.

402790793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 402790793 is about 20069.6485519802. The cubic root of 402790793 is about 738.5158914935.

The spelling of 402790793 in words is "four hundred two million, seven hundred ninety thousand, seven hundred ninety-three".