79840751 has 16 divisors (see below), whose sum is σ = 85307904. Its totient is φ = 74563104.

The previous prime is 79840693. The next prime is 79840763. The reversal of 79840751 is 15704897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79840751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79840699 and 79840708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79840781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303446 + ... + 303708.

It is an arithmetic number, because the mean of its divisors is an integer number (5331744).

Almost surely, 2^79840751 is an apocalyptic number.

79840751 is a deficient number, since it is larger than the sum of its proper divisors (5467153).

79840751 is a wasteful number, since it uses less digits than its factorization.

79840751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 79840751 is about 8935.3651855982. The cubic root of 79840751 is about 430.6008384429.

The spelling of 79840751 in words is "seventy-nine million, eight hundred forty thousand, seven hundred fifty-one".