83979393 has 16 divisors (see below), whose sum is σ = 113356800. Its totient is φ = 55299024.

The previous prime is 83979359. The next prime is 83979407. The reversal of 83979393 is 39397938.

It is a happy number.

It is not a de Polignac number, because 83979393 - 2¹³ = 83971201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83979353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96880 + ... + 97742.

It is an arithmetic number, because the mean of its divisors is an integer number (7084800).

Almost surely, 2^83979393 is an apocalyptic number.

It is an amenable number.

83979393 is a deficient number, since it is larger than the sum of its proper divisors (29377407).

83979393 is a wasteful number, since it uses less digits than its factorization.

83979393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228.

The product of its digits is 1102248, while the sum is 51.

The square root of 83979393 is about 9164.0271169394. The cubic root of 83979393 is about 437.9160980634.

The spelling of 83979393 in words is "eighty-three million, nine hundred seventy-nine thousand, three hundred ninety-three".