83745289 has 4 divisors (see below), whose sum is σ = 83814660. Its totient is φ = 83675920.

The previous prime is 83745269. The next prime is 83745307. The reversal of 83745289 is 98254738.

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 39589264 + 44156025 = 6292^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 83745289 - 2⁷ = 83745161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83745269) 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, 32842 + ... + 35299.

It is an arithmetic number, because the mean of its divisors is an integer number (20953665).

Almost surely, 2^83745289 is an apocalyptic number.

It is an amenable number.

83745289 is a deficient number, since it is larger than the sum of its proper divisors (69371).

83745289 is a wasteful number, since it uses less digits than its factorization.

83745289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69370.

The product of its digits is 483840, while the sum is 46.

The square root of 83745289 is about 9151.2452158163. The cubic root of 83745289 is about 437.5088024351.

The spelling of 83745289 in words is "eighty-three million, seven hundred forty-five thousand, two hundred eighty-nine".