79833989 has 16 divisors (see below), whose sum is σ = 88750080. Its totient is φ = 71427840.

The previous prime is 79833973. The next prime is 79833997. The reversal of 79833989 is 98933897.

It is a cyclic number.

It is not a de Polignac number, because 79833989 - 2⁴ = 79833973 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 (79833289) 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 15 ways as a sum of consecutive naturals, for example, 74147 + ... + 75215.

It is an arithmetic number, because the mean of its divisors is an integer number (5546880).

Almost surely, 2^79833989 is an apocalyptic number.

It is an amenable number.

79833989 is a deficient number, since it is larger than the sum of its proper divisors (8916091).

79833989 is a wasteful number, since it uses less digits than its factorization.

79833989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300.

The product of its digits is 2939328, while the sum is 56.

The square root of 79833989 is about 8934.9867934989. The cubic root of 79833989 is about 430.5886817224.

The spelling of 79833989 in words is "seventy-nine million, eight hundred thirty-three thousand, nine hundred eighty-nine".