79989291 has 6 divisors (see below), whose sum is σ = 115540100. Its totient is φ = 53326188.

The previous prime is 79989281. The next prime is 79989307. The reversal of 79989291 is 19298997.

It is not a de Polignac number, because 79989291 - 2¹⁹ = 79465003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79989271) 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 5 ways as a sum of consecutive naturals, for example, 4443841 + ... + 4443858.

Almost surely, 2^79989291 is an apocalyptic number.

79989291 is a deficient number, since it is larger than the sum of its proper divisors (35550809).

79989291 is a wasteful number, since it uses less digits than its factorization.

79989291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887705 (or 8887702 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 79989291 is about 8943.6732386643. The cubic root of 79989291 is about 430.8677106142.

The spelling of 79989291 in words is "seventy-nine million, nine hundred eighty-nine thousand, two hundred ninety-one".