83089921 has 4 divisors (see below), whose sum is σ = 83123200. Its totient is φ = 83056644.

The previous prime is 83089913. The next prime is 83089939. The reversal of 83089921 is 12998038.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83089921 - 2³ = 83089913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83089121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12561 + ... + 17998.

It is an arithmetic number, because the mean of its divisors is an integer number (20780800).

Almost surely, 2^83089921 is an apocalyptic number.

It is an amenable number.

83089921 is a deficient number, since it is larger than the sum of its proper divisors (33279).

83089921 is a wasteful number, since it uses less digits than its factorization.

83089921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33278.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 83089921 is about 9115.3672992370. The cubic root of 83089921 is about 436.3645371023.

The spelling of 83089921 in words is "eighty-three million, eighty-nine thousand, nine hundred twenty-one".