79630289 has 4 divisors (see below), whose sum is σ = 82199040. Its totient is φ = 77061540.

The previous prime is 79630249. The next prime is 79630297. The reversal of 79630289 is 98203697.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98203697 = 401 ⋅244897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79630289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79630249) 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, 1284329 + ... + 1284390.

It is an arithmetic number, because the mean of its divisors is an integer number (20549760).

Almost surely, 2^79630289 is an apocalyptic number.

It is an amenable number.

79630289 is a deficient number, since it is larger than the sum of its proper divisors (2568751).

79630289 is a wasteful number, since it uses less digits than its factorization.

79630289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568750.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 79630289 is about 8923.5805033630. The cubic root of 79630289 is about 430.2221476980. Note that the first 3 decimals are identical.

The spelling of 79630289 in words is "seventy-nine million, six hundred thirty thousand, two hundred eighty-nine".