79853139 has 12 divisors (see below), whose sum is σ = 117520416. Its totient is φ = 52230672.

The previous prime is 79853113. The next prime is 79853159. The reversal of 79853139 is 93135897.

It is a happy number.

It is not a de Polignac number, because 79853139 - 2¹² = 79849043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79853094 and 79853103.

It is not an unprimeable number, because it can be changed into a prime (79853159) 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 11 ways as a sum of consecutive naturals, for example, 83227 + ... + 84180.

It is an arithmetic number, because the mean of its divisors is an integer number (9793368).

Almost surely, 2^79853139 is an apocalyptic number.

79853139 is a deficient number, since it is larger than the sum of its proper divisors (37667277).

79853139 is a wasteful number, since it uses less digits than its factorization.

79853139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167466 (or 167463 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 79853139 is about 8936.0583592544. The cubic root of 79853139 is about 430.6231078031.

The spelling of 79853139 in words is "seventy-nine million, eight hundred fifty-three thousand, one hundred thirty-nine".