7790913 has 24 divisors (see below), whose sum is σ = 12835368. Its totient is φ = 4511232.

The previous prime is 7790903. The next prime is 7790917. The reversal of 7790913 is 3190977.

It can be written as a sum of positive squares in 4 ways, for example, as 1871424 + 5919489 = 1368^2 + 2433^2 .

It is not a de Polignac number, because 7790913 - 2⁴ = 7790897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7790917) 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 23 ways as a sum of consecutive naturals, for example, 31 + ... + 3947.

It is an arithmetic number, because the mean of its divisors is an integer number (534807).

Almost surely, 2^7790913 is an apocalyptic number.

It is an amenable number.

7790913 is a deficient number, since it is larger than the sum of its proper divisors (5044455).

7790913 is a wasteful number, since it uses less digits than its factorization.

7790913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 7790913 is about 2791.2207006971. The cubic root of 7790913 is about 198.2422043669.

The spelling of 7790913 in words is "seven million, seven hundred ninety thousand, nine hundred thirteen".