79812149 has 8 divisors (see below), whose sum is σ = 80403840. Its totient is φ = 79223200.

The previous prime is 79812137. The next prime is 79812163. The reversal of 79812149 is 94121897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79812149 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 (76812149) 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 7 ways as a sum of consecutive naturals, for example, 120782 + ... + 121440.

It is an arithmetic number, because the mean of its divisors is an integer number (10050480).

Almost surely, 2^79812149 is an apocalyptic number.

It is an amenable number.

79812149 is a deficient number, since it is larger than the sum of its proper divisors (591691).

79812149 is a wasteful number, since it uses less digits than its factorization.

79812149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 36288, while the sum is 41.

The square root of 79812149 is about 8933.7645480503. The cubic root of 79812149 is about 430.5494130909.

The spelling of 79812149 in words is "seventy-nine million, eight hundred twelve thousand, one hundred forty-nine".