79240247 has 16 divisors (see below), whose sum is σ = 88273152. Its totient is φ = 70786560.

The previous prime is 79240243. The next prime is 79240277. The reversal of 79240247 is 74204297.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79240247 - 2² = 79240243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79240243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26513 + ... + 29349.

It is an arithmetic number, because the mean of its divisors is an integer number (5517072).

Almost surely, 2^79240247 is an apocalyptic number.

79240247 is a deficient number, since it is larger than the sum of its proper divisors (9032905).

79240247 is a wasteful number, since it uses less digits than its factorization.

79240247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 79240247 is about 8901.6991074738. The cubic root of 79240247 is about 429.5185651993.

The spelling of 79240247 in words is "seventy-nine million, two hundred forty thousand, two hundred forty-seven".