79309049 has 4 divisors (see below), whose sum is σ = 79326864. Its totient is φ = 79291236.

The previous prime is 79308989. The next prime is 79309051. The reversal of 79309049 is 94090397.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79309049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79308997 and 79309015.

It is not an unprimeable number, because it can be changed into a prime (79309079) 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, 4214 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (19831716).

Almost surely, 2^79309049 is an apocalyptic number.

It is an amenable number.

79309049 is a deficient number, since it is larger than the sum of its proper divisors (17815).

79309049 is an equidigital number, since it uses as much as digits as its factorization.

79309049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 79309049 is about 8905.5628120855. The cubic root of 79309049 is about 429.6428420603.

The spelling of 79309049 in words is "seventy-nine million, three hundred nine thousand, forty-nine".