79263991 has 8 divisors (see below), whose sum is σ = 85011120. Its totient is φ = 73674432.

The previous prime is 79263973. The next prime is 79263997. The reversal of 79263991 is 19936297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79263991 - 2¹⁵ = 79231223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79263997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38350 + ... + 40363.

It is an arithmetic number, because the mean of its divisors is an integer number (10626390).

Almost surely, 2^79263991 is an apocalyptic number.

79263991 is a deficient number, since it is larger than the sum of its proper divisors (5747129).

79263991 is a wasteful number, since it uses less digits than its factorization.

79263991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78785.

The product of its digits is 183708, while the sum is 46.

The square root of 79263991 is about 8903.0326855516. The cubic root of 79263991 is about 429.5614620467.

The spelling of 79263991 in words is "seventy-nine million, two hundred sixty-three thousand, nine hundred ninety-one".