79813197 has 12 divisors (see below), whose sum is σ = 120298464. Its totient is φ = 50895240.

The previous prime is 79813187. The next prime is 79813207. The reversal of 79813197 is 79131897.

It is an interprime number because it is at equal distance from previous prime (79813187) and next prime (79813207).

It is not a de Polignac number, because 79813197 - 2¹⁵ = 79780429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79813157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192579 + ... + 192992.

It is an arithmetic number, because the mean of its divisors is an integer number (10024872).

Almost surely, 2^79813197 is an apocalyptic number.

It is an amenable number.

79813197 is a deficient number, since it is larger than the sum of its proper divisors (40485267).

79813197 is a wasteful number, since it uses less digits than its factorization.

79813197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385600 (or 385597 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 79813197 is about 8933.8232017429. The cubic root of 79813197 is about 430.5512975735.

The spelling of 79813197 in words is "seventy-nine million, eight hundred thirteen thousand, one hundred ninety-seven".