79863893 has 8 divisors (see below), whose sum is σ = 80805600. Its totient is φ = 78928048.

The previous prime is 79863881. The next prime is 79863911. The reversal of 79863893 is 39836897.

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

It is a cyclic number.

It is not a de Polignac number, because 79863893 - 2²² = 75669589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79863803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29678 + ... + 32256.

It is an arithmetic number, because the mean of its divisors is an integer number (10100700).

Almost surely, 2^79863893 is an apocalyptic number.

It is an amenable number.

79863893 is a deficient number, since it is larger than the sum of its proper divisors (941707).

79863893 is a wasteful number, since it uses less digits than its factorization.

79863893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its digits is 1959552, while the sum is 53.

The square root of 79863893 is about 8936.6600584335. The cubic root of 79863893 is about 430.6424379262.

The spelling of 79863893 in words is "seventy-nine million, eight hundred sixty-three thousand, eight hundred ninety-three".