79989841 has 4 divisors (see below), whose sum is σ = 80392000. Its totient is φ = 79587684.

The previous prime is 79989821. The next prime is 79989863. The reversal of 79989841 is 14898997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79989841 - 2¹¹ = 79987793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79989821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200781 + ... + 201178.

It is an arithmetic number, because the mean of its divisors is an integer number (20098000).

Almost surely, 2^79989841 is an apocalyptic number.

It is an amenable number.

79989841 is a deficient number, since it is larger than the sum of its proper divisors (402159).

79989841 is a wasteful number, since it uses less digits than its factorization.

79989841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402158.

The product of its digits is 1306368, while the sum is 55.

The square root of 79989841 is about 8943.7039866042. The cubic root of 79989841 is about 430.8686981493.

The spelling of 79989841 in words is "seventy-nine million, nine hundred eighty-nine thousand, eight hundred forty-one".