79841939 has 4 divisors (see below), whose sum is σ = 79864680. Its totient is φ = 79819200.

The previous prime is 79841929. The next prime is 79841963. The reversal of 79841939 is 93914897.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79841939 - 2⁸ = 79841683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79841929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4862 + ... + 13539.

It is an arithmetic number, because the mean of its divisors is an integer number (19966170).

Almost surely, 2^79841939 is an apocalyptic number.

79841939 is a deficient number, since it is larger than the sum of its proper divisors (22741).

79841939 is a wasteful number, since it uses less digits than its factorization.

79841939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22740.

The product of its digits is 489888, while the sum is 50.

The square root of 79841939 is about 8935.4316627682. The cubic root of 79841939 is about 430.6029741579.

The spelling of 79841939 in words is "seventy-nine million, eight hundred forty-one thousand, nine hundred thirty-nine".