79738539 has 8 divisors (see below), whose sum is σ = 110940672. Its totient is φ = 50847720.

The previous prime is 79738537. The next prime is 79738577. The reversal of 79738539 is 93583797.

It is a happy number.

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

It is not a de Polignac number, because 79738539 - 2¹ = 79738537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79738491 and 79738500.

It is not an unprimeable number, because it can be changed into a prime (79738537) 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, 577747 + ... + 577884.

It is an arithmetic number, because the mean of its divisors is an integer number (13867584).

Almost surely, 2^79738539 is an apocalyptic number.

79738539 is a deficient number, since it is larger than the sum of its proper divisors (31202133).

79738539 is a wasteful number, since it uses less digits than its factorization.

79738539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155657.

The product of its digits is 1428840, while the sum is 51.

The square root of 79738539 is about 8929.6438338827. The cubic root of 79738539 is about 430.4170084759.

The spelling of 79738539 in words is "seventy-nine million, seven hundred thirty-eight thousand, five hundred thirty-nine".