79869151 has 4 divisors (see below), whose sum is σ = 79920400. Its totient is φ = 79817904.

The previous prime is 79869143. The next prime is 79869169. The reversal of 79869151 is 15196897.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79869151 - 2³ = 79869143 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 (79869551) 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, 23211 + ... + 26428.

It is an arithmetic number, because the mean of its divisors is an integer number (19980100).

Almost surely, 2^79869151 is an apocalyptic number.

79869151 is a deficient number, since it is larger than the sum of its proper divisors (51249).

79869151 is a wasteful number, since it uses less digits than its factorization.

79869151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51248.

The product of its digits is 136080, while the sum is 46.

The square root of 79869151 is about 8936.9542350848. The cubic root of 79869151 is about 430.6518884558.

The spelling of 79869151 in words is "seventy-nine million, eight hundred sixty-nine thousand, one hundred fifty-one".