83288979 has 28 divisors (see below), whose sum is σ = 127828536. Its totient is φ = 54214272.

The previous prime is 83288969. The next prime is 83289007. The reversal of 83288979 is 97988238.

It is not a de Polignac number, because 83288979 - 2²¹ = 81191827 is a prime.

It is a super-3 number, since 3×83288979³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (83288929) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 30019 + ... + 32675.

Almost surely, 2^83288979 is an apocalyptic number.

83288979 is a deficient number, since it is larger than the sum of its proper divisors (44539557).

83288979 is an equidigital number, since it uses as much as digits as its factorization.

83288979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718 (or 2703 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 83288979 is about 9126.2795815162. The cubic root of 83288979 is about 436.7127244570.

The spelling of 83288979 in words is "eighty-three million, two hundred eighty-eight thousand, nine hundred seventy-nine".