79454905 has 4 divisors (see below), whose sum is σ = 95345892. Its totient is φ = 63563920.

The previous prime is 79454899. The next prime is 79454917. The reversal of 79454905 is 50945497.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37503376 + 41951529 = 6124^2 + 6477^2 .

It is not a de Polignac number, because 79454905 - 2⁷ = 79454777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7945486 + ... + 7945495.

It is an arithmetic number, because the mean of its divisors is an integer number (23836473).

Almost surely, 2^79454905 is an apocalyptic number.

It is an amenable number.

79454905 is a deficient number, since it is larger than the sum of its proper divisors (15890987).

79454905 is a wasteful number, since it uses less digits than its factorization.

79454905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15890986.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 79454905 is about 8913.7480893281. The cubic root of 79454905 is about 429.9060638505.

The spelling of 79454905 in words is "seventy-nine million, four hundred fifty-four thousand, nine hundred five".