7639930 has 16 divisors (see below), whose sum is σ = 13875624. Its totient is φ = 3028480.

The previous prime is 7639927. The next prime is 7639993. The reversal of 7639930 is 399367.

It can be written as a sum of positive squares in 4 ways, for example, as 4986289 + 2653641 = 2233^2 + 1629^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7639930.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251 + ... + 4510.

Almost surely, 2^7639930 is an apocalyptic number.

7639930 is a deficient number, since it is larger than the sum of its proper divisors (6235694).

7639930 is a wasteful number, since it uses less digits than its factorization.

7639930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6881.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 7639930 is about 2764.0423296325. The cubic root of 7639930 is about 196.9532385770.

The spelling of 7639930 in words is "seven million, six hundred thirty-nine thousand, nine hundred thirty".