402790811 has 4 divisors (see below), whose sum is σ = 402834912. Its totient is φ = 402746712.

The previous prime is 402790793. The next prime is 402790849. The reversal of 402790811 is 118097204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402790811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402790891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675 + ... + 28508.

It is an arithmetic number, because the mean of its divisors is an integer number (100708728).

Almost surely, 2^402790811 is an apocalyptic number.

402790811 is a deficient number, since it is larger than the sum of its proper divisors (44101).

402790811 is a wasteful number, since it uses less digits than its factorization.

402790811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44100.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 402790811 is about 20069.6490004185. The cubic root of 402790811 is about 738.5159024945.

The spelling of 402790811 in words is "four hundred two million, seven hundred ninety thousand, eight hundred eleven".