83137289 has 4 divisors (see below), whose sum is σ = 83322900. Its totient is φ = 82951680.

The previous prime is 83137283. The next prime is 83137333. The reversal of 83137289 is 98273138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38688400 + 44448889 = 6220^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 83137289 - 2⁴ = 83137273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83137283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92132 + ... + 93029.

It is an arithmetic number, because the mean of its divisors is an integer number (20830725).

Almost surely, 2^83137289 is an apocalyptic number.

It is an amenable number.

83137289 is a deficient number, since it is larger than the sum of its proper divisors (185611).

83137289 is a wasteful number, since it uses less digits than its factorization.

83137289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185610.

The product of its digits is 72576, while the sum is 41.

The square root of 83137289 is about 9117.9651787008. The cubic root of 83137289 is about 436.4474424197.

The spelling of 83137289 in words is "eighty-three million, one hundred thirty-seven thousand, two hundred eighty-nine".