79849691 has 8 divisors (see below), whose sum is σ = 80967600. Its totient is φ = 78738400.

The previous prime is 79849687. The next prime is 79849699. The reversal of 79849691 is 19694897.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79849691 - 2² = 79849687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79849699) 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, 25700 + ... + 28638.

It is an arithmetic number, because the mean of its divisors is an integer number (10120950).

Almost surely, 2^79849691 is an apocalyptic number.

79849691 is a deficient number, since it is larger than the sum of its proper divisors (1117909).

79849691 is a wasteful number, since it uses less digits than its factorization.

79849691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309.

The product of its digits is 979776, while the sum is 53.

The square root of 79849691 is about 8935.8654309474. The cubic root of 79849691 is about 430.6169097172.

The spelling of 79849691 in words is "seventy-nine million, eight hundred forty-nine thousand, six hundred ninety-one".