79745839 has 8 divisors (see below), whose sum is σ = 80936960. Its totient is φ = 78559416.

The previous prime is 79745837. The next prime is 79745873. The reversal of 79745839 is 93854797.

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 79745839 - 2¹ = 79745837 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 (79745837) 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, 47122 + ... + 48784.

It is an arithmetic number, because the mean of its divisors is an integer number (10117120).

Almost surely, 2^79745839 is an apocalyptic number.

79745839 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

79745839 is a deficient number, since it is larger than the sum of its proper divisors (1191121).

79745839 is a wasteful number, since it uses less digits than its factorization.

79745839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349.

The product of its digits is 1905120, while the sum is 52.

The square root of 79745839 is about 8930.0525754331. The cubic root of 79745839 is about 430.4301428536.

The spelling of 79745839 in words is "seventy-nine million, seven hundred forty-five thousand, eight hundred thirty-nine".