83389845479 has 2 divisors, whose sum is σ = 83389845480. Its totient is φ = 83389845478.

The previous prime is 83389845437. The next prime is 83389845563. The reversal of 83389845479 is 97454898338.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83389845479 - 2²⁴ = 83373068263 is a prime.

It is a super-2 number, since 2×83389845479² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83389845179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41694922739 + 41694922740.

It is an arithmetic number, because the mean of its divisors is an integer number (41694922740).

Almost surely, 2^83389845479 is an apocalyptic number.

83389845479 is a deficient number, since it is larger than the sum of its proper divisors (1).

83389845479 is an equidigital number, since it uses as much as digits as its factorization.

83389845479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209018880, while the sum is 68.

The spelling of 83389845479 in words is "eighty-three billion, three hundred eighty-nine million, eight hundred forty-five thousand, four hundred seventy-nine".