7939509628 has 12 divisors (see below), whose sum is σ = 13896911952. Its totient is φ = 3968963360.

The previous prime is 7939509623. The next prime is 7939509631. The reversal of 7939509628 is 8269059397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7939509623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175000 + ... + 215647.

It is an arithmetic number, because the mean of its divisors is an integer number (1158075996).

Almost surely, 2^7939509628 is an apocalyptic number.

It is an amenable number.

7939509628 is a deficient number, since it is larger than the sum of its proper divisors (5957402324).

7939509628 is a wasteful number, since it uses less digits than its factorization.

7939509628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395732 (or 395730 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 58.

The square root of 7939509628 is about 89103.9259965575. The cubic root of 7939509628 is about 1994.9463768687.

The spelling of 7939509628 in words is "seven billion, nine hundred thirty-nine million, five hundred nine thousand, six hundred twenty-eight".