79666449 has 8 divisors (see below), whose sum is σ = 111812640. Its totient is φ = 50315616.

The previous prime is 79666441. The next prime is 79666453. The reversal of 79666449 is 94466697.

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

It is not a de Polignac number, because 79666449 - 2³ = 79666441 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (79666441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698772 + ... + 698885.

It is an arithmetic number, because the mean of its divisors is an integer number (13976580).

Almost surely, 2^79666449 is an apocalyptic number.

It is an amenable number.

79666449 is a deficient number, since it is larger than the sum of its proper divisors (32146191).

79666449 is a wasteful number, since it uses less digits than its factorization.

79666449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397679.

The product of its digits is 1959552, while the sum is 51.

The square root of 79666449 is about 8925.6063659563. The cubic root of 79666449 is about 430.2872589300.

The spelling of 79666449 in words is "seventy-nine million, six hundred sixty-six thousand, four hundred forty-nine".