79997074 has 4 divisors (see below), whose sum is σ = 119995614. Its totient is φ = 39998536.

The previous prime is 79997041. The next prime is 79997077. The reversal of 79997074 is 47079997.

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

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 33143049 = 6845^2 + 5757^2 .

It is a super-2 number, since 2×79997074² = 12799063697122952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79997077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19999267 + ... + 19999270.

Almost surely, 2^79997074 is an apocalyptic number.

79997074 is a deficient number, since it is larger than the sum of its proper divisors (39998540).

79997074 is a wasteful number, since it uses less digits than its factorization.

79997074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39998539.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 79997074 is about 8944.1083401309. The cubic root of 79997074 is about 430.8816847124.

The spelling of 79997074 in words is "seventy-nine million, nine hundred ninety-seven thousand, seventy-four".