79855897 has 16 divisors (see below), whose sum is σ = 88602624. Its totient is φ = 71370000.

The previous prime is 79855891. The next prime is 79855903.

79855897 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (79855891) and next prime (79855903).

It is a cyclic number.

It is not a de Polignac number, because 79855897 - 2¹⁵ = 79823129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79855891) 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, 217408 + ... + 217774.

It is an arithmetic number, because the mean of its divisors is an integer number (5537664).

Almost surely, 2^79855897 is an apocalyptic number.

It is an amenable number.

79855897 is a deficient number, since it is larger than the sum of its proper divisors (8746727).

79855897 is a wasteful number, since it uses less digits than its factorization.

79855897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its digits is 6350400, while the sum is 58.

The square root of 79855897 is about 8936.2126765202. The cubic root of 79855897 is about 430.6280654243.

The spelling of 79855897 in words is "seventy-nine million, eight hundred fifty-five thousand, eight hundred ninety-seven".