79749119 has 4 divisors (see below), whose sum is σ = 83216496. Its totient is φ = 76281744.

The previous prime is 79749113. The next prime is 79749127. The reversal of 79749119 is 91194797.

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 79749119 - 2⁸ = 79748863 is a prime.

It is a super-2 number, since 2×79749119² = 12719843962552322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79749113) 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, 1733654 + ... + 1733699.

It is an arithmetic number, because the mean of its divisors is an integer number (20804124).

Almost surely, 2^79749119 is an apocalyptic number.

79749119 is a deficient number, since it is larger than the sum of its proper divisors (3467377).

79749119 is a wasteful number, since it uses less digits than its factorization.

79749119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467376.

The product of its digits is 142884, while the sum is 47.

The square root of 79749119 is about 8930.2362230794. The cubic root of 79749119 is about 430.4360440665.

The spelling of 79749119 in words is "seventy-nine million, seven hundred forty-nine thousand, one hundred nineteen".