79550897 has 4 divisors (see below), whose sum is σ = 79740276. Its totient is φ = 79361520.

The previous prime is 79550881. The next prime is 79550899. The reversal of 79550897 is 79805597.

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 9728161 + 69822736 = 3119^2 + 8356^2 .

It is a cyclic number.

It is not a de Polignac number, because 79550897 - 2⁴ = 79550881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79550899) 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, 94058 + ... + 94899.

It is an arithmetic number, because the mean of its divisors is an integer number (19935069).

Almost surely, 2^79550897 is an apocalyptic number.

It is an amenable number.

79550897 is a deficient number, since it is larger than the sum of its proper divisors (189379).

79550897 is a wasteful number, since it uses less digits than its factorization.

79550897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189378.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 79550897 is about 8919.1309554239. The cubic root of 79550897 is about 430.0791219105.

The spelling of 79550897 in words is "seventy-nine million, five hundred fifty thousand, eight hundred ninety-seven".