83123289 has 6 divisors (see below), whose sum is σ = 120066986. Its totient is φ = 55415520.

The previous prime is 83123279. The next prime is 83123323. The reversal of 83123289 is 98232138.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83119689 + 3600 = 9117^2 + 60^2 .

It is not a de Polignac number, because 83123289 - 2¹² = 83119193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83123279) 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, 4617952 + ... + 4617969.

Almost surely, 2^83123289 is an apocalyptic number.

It is an amenable number.

83123289 is a deficient number, since it is larger than the sum of its proper divisors (36943697).

83123289 is a wasteful number, since it uses less digits than its factorization.

83123289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235927 (or 9235924 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 83123289 is about 9117.1974312285. The cubic root of 83123289 is about 436.4229423537.

The spelling of 83123289 in words is "eighty-three million, one hundred twenty-three thousand, two hundred eighty-nine".