83331993 has 16 divisors (see below), whose sum is σ = 115418880. Its totient is φ = 53415936.

The previous prime is 83331973. The next prime is 83332003. The reversal of 83331993 is 39913338.

It is a happy number.

It is not a de Polignac number, because 83331993 - 2⁵ = 83331961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83331973) 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, 20496 + ... + 24222.

It is an arithmetic number, because the mean of its divisors is an integer number (7213680).

Almost surely, 2^83331993 is an apocalyptic number.

It is an amenable number.

83331993 is a deficient number, since it is larger than the sum of its proper divisors (32086887).

83331993 is a wasteful number, since it uses less digits than its factorization.

83331993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016.

The product of its digits is 52488, while the sum is 39.

The square root of 83331993 is about 9128.6358783774. The cubic root of 83331993 is about 436.7878905776.

The spelling of 83331993 in words is "eighty-three million, three hundred thirty-one thousand, nine hundred ninety-three".