79911331 has 4 divisors (see below), whose sum is σ = 79943112. Its totient is φ = 79879552.

The previous prime is 79911317. The next prime is 79911367. The reversal of 79911331 is 13311997.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79911331 - 2⁹ = 79910819 is a prime.

It is a super-2 number, since 2×79911331² = 12771641644383122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79911371) 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 3 ways as a sum of consecutive naturals, for example, 11761 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (19985778).

Almost surely, 2^79911331 is an apocalyptic number.

79911331 is a deficient number, since it is larger than the sum of its proper divisors (31781).

79911331 is a wasteful number, since it uses less digits than its factorization.

79911331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31780.

The product of its digits is 5103, while the sum is 34.

The square root of 79911331 is about 8939.3137879817. The cubic root of 79911331 is about 430.7276861810.

The spelling of 79911331 in words is "seventy-nine million, nine hundred eleven thousand, three hundred thirty-one".