79201191 has 4 divisors (see below), whose sum is σ = 105601592. Its totient is φ = 52800792.

The previous prime is 79201163. The next prime is 79201193. The reversal of 79201191 is 19110297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19110297 = 3 ⋅6370099.

It is a de Polignac number, because none of the positive numbers 2^k-79201191 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 (79201193) 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 3 ways as a sum of consecutive naturals, for example, 13200196 + ... + 13200201.

It is an arithmetic number, because the mean of its divisors is an integer number (26400398).

Almost surely, 2^79201191 is an apocalyptic number.

79201191 is a deficient number, since it is larger than the sum of its proper divisors (26400401).

79201191 is a wasteful number, since it uses less digits than its factorization.

79201191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26400400.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 79201191 is about 8899.5050985996. The cubic root of 79201191 is about 429.4479864445.

The spelling of 79201191 in words is "seventy-nine million, two hundred one thousand, one hundred ninety-one".