83439189 has 6 divisors (see below), whose sum is σ = 120523286. Its totient is φ = 55626120.

The previous prime is 83439143. The next prime is 83439199. The reversal of 83439189 is 98193438.

It can be written as a sum of positive squares in only one way, i.e., 67519089 + 15920100 = 8217^2 + 3990^2 .

It is not a de Polignac number, because 83439189 - 2⁸ = 83438933 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 (83439199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4635502 + ... + 4635519.

Almost surely, 2^83439189 is an apocalyptic number.

It is an amenable number.

83439189 is a deficient number, since it is larger than the sum of its proper divisors (37084097).

83439189 is a wasteful number, since it uses less digits than its factorization.

83439189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271027 (or 9271024 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 83439189 is about 9134.5054053298. The cubic root of 83439189 is about 436.9751009976.

The spelling of 83439189 in words is "eighty-three million, four hundred thirty-nine thousand, one hundred eighty-nine".