79639061 has 4 divisors (see below), whose sum is σ = 80166624. Its totient is φ = 79111500.

The previous prime is 79639057. The next prime is 79639129. The reversal of 79639061 is 16093697.

It is a happy number.

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 79639061 - 2² = 79639057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79639561) 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, 263555 + ... + 263856.

It is an arithmetic number, because the mean of its divisors is an integer number (20041656).

Almost surely, 2^79639061 is an apocalyptic number.

It is an amenable number.

79639061 is a deficient number, since it is larger than the sum of its proper divisors (527563).

79639061 is a wasteful number, since it uses less digits than its factorization.

79639061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527562.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 79639061 is about 8924.0719965720. The cubic root of 79639061 is about 430.2379447444.

The spelling of 79639061 in words is "seventy-nine million, six hundred thirty-nine thousand, sixty-one".