79198071 has 4 divisors (see below), whose sum is σ = 105597432. Its totient is φ = 52798712.

The previous prime is 79198057. The next prime is 79198073. The reversal of 79198071 is 17089197.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17089197 = 3 ⋅5696399.

It is a cyclic number.

It is not a de Polignac number, because 79198071 - 2¹⁰ = 79197047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79198073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13199676 + ... + 13199681.

It is an arithmetic number, because the mean of its divisors is an integer number (26399358).

Almost surely, 2^79198071 is an apocalyptic number.

79198071 is a deficient number, since it is larger than the sum of its proper divisors (26399361).

79198071 is a wasteful number, since it uses less digits than its factorization.

79198071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26399360.

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 79198071 is about 8899.3298062270. The cubic root of 79198071 is about 429.4423472392.

The spelling of 79198071 in words is "seventy-nine million, one hundred ninety-eight thousand, seventy-one".