83389845529 has 3 divisors (see below), whose sum is σ = 83390134303. Its totient is φ = 83389556756.

The previous prime is 83389845479. The next prime is 83389845563. The reversal of 83389845529 is 92554898338.

The square root of 83389845529 is 288773.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 61442015625 + 21947829904 = 247875^2 + 148148^2 .

It is not a de Polignac number, because 83389845529 - 2⁷ = 83389845401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83389845569) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 144387 + ... + 433159.

Almost surely, 2^83389845529 is an apocalyptic number.

83389845529 is the 288773-rd square number.

83389845529 is the 144387-th centered octagonal number.

It is an amenable number.

83389845529 is a deficient number, since it is larger than the sum of its proper divisors (288774).

83389845529 is an frugal number, since it uses more digits than its factorization.

83389845529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577546 (or 288773 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 64.

Multiplying 83389845529 by its sum of digits (64), we get a square (5336950113856 = 2310184²).

The spelling of 83389845529 in words is "eighty-three billion, three hundred eighty-nine million, eight hundred forty-five thousand, five hundred twenty-nine".