83768489 has 20 divisors (see below), whose sum is σ = 98819280. Its totient is φ = 71001000.

The previous prime is 83768441. The next prime is 83768527. The reversal of 83768489 is 98486738.

It is a happy number.

It is not a de Polignac number, because 83768489 - 2⁸ = 83768233 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83768489.

It is not an unprimeable number, because it can be changed into a prime (83765489) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 333614 + ... + 333864.

It is an arithmetic number, because the mean of its divisors is an integer number (4940964).

Almost surely, 2^83768489 is an apocalyptic number.

It is an amenable number.

83768489 is a deficient number, since it is larger than the sum of its proper divisors (15050791).

83768489 is an equidigital number, since it uses as much as digits as its factorization.

83768489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 397 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 83768489 is about 9152.5127150963. The cubic root of 83768489 is about 437.5491998003.

The spelling of 83768489 in words is "eighty-three million, seven hundred sixty-eight thousand, four hundred eighty-nine".