79947297 has 16 divisors (see below), whose sum is σ = 119551680. Its totient is φ = 52798176.

The previous prime is 79947293. The next prime is 79947299. The reversal of 79947297 is 79274997.

It is not a de Polignac number, because 79947297 - 2² = 79947293 is a prime.

Its product of digits (2000376) is a multiple of the sum of its prime divisors (27783).

It is not an unprimeable number, because it can be changed into a prime (79947293) 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, 10948 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (7471980).

Almost surely, 2^79947297 is an apocalyptic number.

It is an amenable number.

79947297 is a deficient number, since it is larger than the sum of its proper divisors (39604383).

79947297 is a wasteful number, since it uses less digits than its factorization.

79947297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27789 (or 27783 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 79947297 is about 8941.3252373460. The cubic root of 79947297 is about 430.7922962442.

It can be divided in two parts, 79 and 947297, that added together give a triangular number (947376 = T₁₃₇₆).

The spelling of 79947297 in words is "seventy-nine million, nine hundred forty-seven thousand, two hundred ninety-seven".