83710989 has 10 divisors (see below), whose sum is σ = 125049870. Its totient is φ = 55807272.

The previous prime is 83710951. The next prime is 83710993. The reversal of 83710989 is 98901738.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 27910089 = 7470^2 + 5283^2 .

It is not a de Polignac number, because 83710989 - 2¹¹ = 83708941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83710189) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 516654 + ... + 516815.

It is an arithmetic number, because the mean of its divisors is an integer number (12504987).

Almost surely, 2^83710989 is an apocalyptic number.

It is an amenable number.

83710989 is a deficient number, since it is larger than the sum of its proper divisors (41338881).

83710989 is a wasteful number, since it uses less digits than its factorization.

83710989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033481 (or 1033472 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 83710989 is about 9149.3709619842. The cubic root of 83710989 is about 437.4490633488.

The spelling of 83710989 in words is "eighty-three million, seven hundred ten thousand, nine hundred eighty-nine".