79639814 has 8 divisors (see below), whose sum is σ = 121713840. Its totient is φ = 39068536.

The previous prime is 79639789. The next prime is 79639817. The reversal of 79639814 is 41893697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79639817) 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, 375554 + ... + 375765.

It is an arithmetic number, because the mean of its divisors is an integer number (15214230).

Almost surely, 2^79639814 is an apocalyptic number.

79639814 is a deficient number, since it is larger than the sum of its proper divisors (42074026).

79639814 is a wasteful number, since it uses less digits than its factorization.

79639814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751374.

The product of its digits is 326592, while the sum is 47.

The square root of 79639814 is about 8924.1141857329. The cubic root of 79639814 is about 430.2393007295.

The spelling of 79639814 in words is "seventy-nine million, six hundred thirty-nine thousand, eight hundred fourteen".