83528389 has 20 divisors (see below), whose sum is σ = 102628640. Its totient is φ = 67790520.

The previous prime is 83528287. The next prime is 83528411. The reversal of 83528389 is 98382538.

It is a happy number.

It is not a de Polignac number, because 83528389 - 2⁷ = 83528261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83522389) 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, 44704 + ... + 46534.

It is an arithmetic number, because the mean of its divisors is an integer number (5131432).

Almost surely, 2^83528389 is an apocalyptic number.

It is an amenable number.

83528389 is a deficient number, since it is larger than the sum of its proper divisors (19100251).

83528389 is an equidigital number, since it uses as much as digits as its factorization.

83528389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1857 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 83528389 is about 9139.3866862060. The cubic root of 83528389 is about 437.1307604583.

The spelling of 83528389 in words is "eighty-three million, five hundred twenty-eight thousand, three hundred eighty-nine".