79826641 has 4 divisors (see below), whose sum is σ = 80184832. Its totient is φ = 79468452.

The previous prime is 79826627. The next prime is 79826653. The reversal of 79826641 is 14662897.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14662897 = 2357 ⋅6221.

It is a cyclic number.

It is not a de Polignac number, because 79826641 - 2⁵ = 79826609 is a prime.

It is a super-2 number, since 2×79826641² = 12744585226685762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79826141) 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, 178761 + ... + 179206.

It is an arithmetic number, because the mean of its divisors is an integer number (20046208).

Almost surely, 2^79826641 is an apocalyptic number.

It is an amenable number.

79826641 is a deficient number, since it is larger than the sum of its proper divisors (358191).

79826641 is a wasteful number, since it uses less digits than its factorization.

79826641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358190.

The product of its digits is 145152, while the sum is 43.

The square root of 79826641 is about 8934.5755914873. The cubic root of 79826641 is about 430.5754707132.

The spelling of 79826641 in words is "seventy-nine million, eight hundred twenty-six thousand, six hundred forty-one".