79041997 has 4 divisors (see below), whose sum is σ = 79073500. Its totient is φ = 79010496.

The previous prime is 79041983. The next prime is 79042001. The reversal of 79041997 is 79914097.

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 42693156 + 36348841 = 6534^2 + 6029^2 .

It is a cyclic number.

It is not a de Polignac number, because 79041997 - 2¹¹ = 79039949 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 (79041917) 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, 11628 + ... + 17125.

It is an arithmetic number, because the mean of its divisors is an integer number (19768375).

Almost surely, 2^79041997 is an apocalyptic number.

It is an amenable number.

79041997 is a deficient number, since it is larger than the sum of its proper divisors (31503).

79041997 is a wasteful number, since it uses less digits than its factorization.

79041997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31502.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 79041997 is about 8890.5566192449. The cubic root of 79041997 is about 429.1600640117.

The spelling of 79041997 in words is "seventy-nine million, forty-one thousand, nine hundred ninety-seven".