83990593 has 4 divisors (see below), whose sum is σ = 84014788. Its totient is φ = 83966400.

The previous prime is 83990573. The next prime is 83990603. The reversal of 83990593 is 39509938.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23648769 + 60341824 = 4863^2 + 7768^2 .

It is a cyclic number.

It is not a de Polignac number, because 83990593 - 2¹³ = 83982401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83990513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5796 + ... + 14197.

It is an arithmetic number, because the mean of its divisors is an integer number (21003697).

Almost surely, 2^83990593 is an apocalyptic number.

It is an amenable number.

83990593 is a deficient number, since it is larger than the sum of its proper divisors (24195).

83990593 is a wasteful number, since it uses less digits than its factorization.

83990593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24194.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 83990593 is about 9164.6381816196. The cubic root of 83990593 is about 437.9355649116.

The spelling of 83990593 in words is "eighty-three million, nine hundred ninety thousand, five hundred ninety-three".