79906641 has 4 divisors (see below), whose sum is σ = 106542192. Its totient is φ = 53271092.

The previous prime is 79906621. The next prime is 79906693. The reversal of 79906641 is 14660997.

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 79906641 - 2¹¹ = 79904593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79906593 and 79906602.

It is not an unprimeable number, because it can be changed into a prime (79906601) 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, 13317771 + ... + 13317776.

It is an arithmetic number, because the mean of its divisors is an integer number (26635548).

Almost surely, 2^79906641 is an apocalyptic number.

It is an amenable number.

79906641 is a deficient number, since it is larger than the sum of its proper divisors (26635551).

79906641 is a wasteful number, since it uses less digits than its factorization.

79906641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26635550.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 79906641 is about 8939.0514597467. The cubic root of 79906641 is about 430.7192595397.

The spelling of 79906641 in words is "seventy-nine million, nine hundred six thousand, six hundred forty-one".