83893931 has 4 divisors (see below), whose sum is σ = 91520664. Its totient is φ = 76267200.

The previous prime is 83893891. The next prime is 83893951. The reversal of 83893931 is 13939838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83893931 is a prime.

It is a super-2 number, since 2×83893931² = 14076383317265522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83893951) 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 3 ways as a sum of consecutive naturals, for example, 3813350 + ... + 3813371.

It is an arithmetic number, because the mean of its divisors is an integer number (22880166).

Almost surely, 2^83893931 is an apocalyptic number.

83893931 is a deficient number, since it is larger than the sum of its proper divisors (7626733).

83893931 is a wasteful number, since it uses less digits than its factorization.

83893931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626732.

The product of its digits is 139968, while the sum is 44.

The square root of 83893931 is about 9159.3630237042. The cubic root of 83893931 is about 437.7674985609.

The spelling of 83893931 in words is "eighty-three million, eight hundred ninety-three thousand, nine hundred thirty-one".