83993193 has 42 divisors (see below), whose sum is σ = 131376414. Its totient is φ = 53669952.

The previous prime is 83993191. The next prime is 83993197. The reversal of 83993193 is 39139938.

It can be written as a sum of positive squares in 3 ways, for example, as 16621929 + 67371264 = 4077^2 + 8208^2 .

It is not a de Polignac number, because 83993193 - 2¹ = 83993191 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83993191) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 613021 + ... + 613157.

Almost surely, 2^83993193 is an apocalyptic number.

It is an amenable number.

83993193 is a deficient number, since it is larger than the sum of its proper divisors (47383221).

83993193 is an equidigital number, since it uses as much as digits as its factorization.

83993193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 169 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 83993193 is about 9164.7800300935. The cubic root of 83993193 is about 437.9400837538.

The spelling of 83993193 in words is "eighty-three million, nine hundred ninety-three thousand, one hundred ninety-three".