79830621 has 24 divisors (see below), whose sum is σ = 124671456. Its totient is φ = 48932640.

The previous prime is 79830607. The next prime is 79830629. The reversal of 79830621 is 12603897.

It is not a de Polignac number, because 79830621 - 2⁶ = 79830557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79830629) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31906 + ... + 34316.

It is an arithmetic number, because the mean of its divisors is an integer number (5194644).

Almost surely, 2^79830621 is an apocalyptic number.

It is an amenable number.

79830621 is a deficient number, since it is larger than the sum of its proper divisors (44840835).

79830621 is a wasteful number, since it uses less digits than its factorization.

79830621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 79830621 is about 8934.7983189326. The cubic root of 79830621 is about 430.5826264775.

The spelling of 79830621 in words is "seventy-nine million, eight hundred thirty thousand, six hundred twenty-one".