79821383 has 8 divisors (see below), whose sum is σ = 82204416. Its totient is φ = 77459200.

The previous prime is 79821353. The next prime is 79821407. The reversal of 79821383 is 38312897.

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 79821383 - 2⁶ = 79821319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79821383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79821323) 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, 2735 + ... + 12927.

It is an arithmetic number, because the mean of its divisors is an integer number (10275552).

Almost surely, 2^79821383 is an apocalyptic number.

79821383 is a deficient number, since it is larger than the sum of its proper divisors (2383033).

79821383 is a wasteful number, since it uses less digits than its factorization.

79821383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425.

The product of its digits is 72576, while the sum is 41.

The square root of 79821383 is about 8934.2813365150. The cubic root of 79821383 is about 430.5660168286.

The spelling of 79821383 in words is "seventy-nine million, eight hundred twenty-one thousand, three hundred eighty-three".