83989451 has 12 divisors (see below), whose sum is σ = 103941072. Its totient is φ = 66452256.

The previous prime is 83989441. The next prime is 83989453. The reversal of 83989451 is 15498938.

It is not a de Polignac number, because 83989451 - 2⁶ = 83989387 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83989396 and 83989405.

It is not an unprimeable number, because it can be changed into a prime (83989453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34316 + ... + 36681.

It is an arithmetic number, because the mean of its divisors is an integer number (8661756).

Almost surely, 2^83989451 is an apocalyptic number.

83989451 is a deficient number, since it is larger than the sum of its proper divisors (19951621).

83989451 is a wasteful number, since it uses less digits than its factorization.

83989451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71030 (or 71017 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 83989451 is about 9164.5758767114. The cubic root of 83989451 is about 437.9335800676.

The spelling of 83989451 in words is "eighty-three million, nine hundred eighty-nine thousand, four hundred fifty-one".