79277491 has 4 divisors (see below), whose sum is σ = 80577184. Its totient is φ = 77977800.

The previous prime is 79277467. The next prime is 79277521. The reversal of 79277491 is 19477297.

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 79277491 - 2⁵ = 79277459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79277411) 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, 649755 + ... + 649876.

It is an arithmetic number, because the mean of its divisors is an integer number (20144296).

Almost surely, 2^79277491 is an apocalyptic number.

79277491 is a deficient number, since it is larger than the sum of its proper divisors (1299693).

79277491 is a wasteful number, since it uses less digits than its factorization.

79277491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299692.

The product of its digits is 222264, while the sum is 46.

The square root of 79277491 is about 8903.7908218915. The cubic root of 79277491 is about 429.5858478595.

The spelling of 79277491 in words is "seventy-nine million, two hundred seventy-seven thousand, four hundred ninety-one".