83488979 has 4 divisors (see below), whose sum is σ = 95415984. Its totient is φ = 71561976.

The previous prime is 83488973. The next prime is 83488981. The reversal of 83488979 is 97988438.

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

It is a cyclic number.

It is not a de Polignac number, because 83488979 - 2²⁴ = 66711763 is a prime.

It is a super-2 number, since 2×83488979² = 13940819228924882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83488973) 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, 5963492 + ... + 5963505.

It is an arithmetic number, because the mean of its divisors is an integer number (23853996).

Almost surely, 2^83488979 is an apocalyptic number.

83488979 is a deficient number, since it is larger than the sum of its proper divisors (11927005).

83488979 is a wasteful number, since it uses less digits than its factorization.

83488979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11927004.

The product of its digits is 3483648, while the sum is 56.

The square root of 83488979 is about 9137.2303790591. The cubic root of 83488979 is about 437.0620012673.

The spelling of 83488979 in words is "eighty-three million, four hundred eighty-eight thousand, nine hundred seventy-nine".