79848139 has 8 divisors (see below), whose sum is σ = 91398368. Its totient is φ = 68333760.

The previous prime is 79848137. The next prime is 79848143. The reversal of 79848139 is 93184897.

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 79848139 - 2¹ = 79848137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79848092 and 79848101.

It is not an unprimeable number, because it can be changed into a prime (79848137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4002 + ... + 13255.

It is an arithmetic number, because the mean of its divisors is an integer number (11424796).

Almost surely, 2^79848139 is an apocalyptic number.

79848139 is a deficient number, since it is larger than the sum of its proper divisors (11550229).

79848139 is a wasteful number, since it uses less digits than its factorization.

79848139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17925.

The product of its digits is 435456, while the sum is 49.

The square root of 79848139 is about 8935.7785894683. The cubic root of 79848139 is about 430.6141198012.

The spelling of 79848139 in words is "seventy-nine million, eight hundred forty-eight thousand, one hundred thirty-nine".