79247899 has 4 divisors (see below), whose sum is σ = 79299000. Its totient is φ = 79196800.

The previous prime is 79247893. The next prime is 79247911. The reversal of 79247899 is 99874297.

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 79247899 - 2⁵ = 79247867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79247893) 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, 23149 + ... + 26350.

It is an arithmetic number, because the mean of its divisors is an integer number (19824750).

Almost surely, 2^79247899 is an apocalyptic number.

79247899 is a deficient number, since it is larger than the sum of its proper divisors (51101).

79247899 is a wasteful number, since it uses less digits than its factorization.

79247899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51100.

The product of its digits is 2286144, while the sum is 55.

The square root of 79247899 is about 8902.1289026839. The cubic root of 79247899 is about 429.5323905402.

The spelling of 79247899 in words is "seventy-nine million, two hundred forty-seven thousand, eight hundred ninety-nine".