83697889 has 8 divisors (see below), whose sum is σ = 91471968. Its totient is φ = 75951360.

The previous prime is 83697881. The next prime is 83697937. The reversal of 83697889 is 98879638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83697889 - 2³ = 83697881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83697881) 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 7 ways as a sum of consecutive naturals, for example, 247 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (11433996).

Almost surely, 2^83697889 is an apocalyptic number.

It is an amenable number.

83697889 is a deficient number, since it is larger than the sum of its proper divisors (7774079).

83697889 is a wasteful number, since it uses less digits than its factorization.

83697889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13775.

The product of its digits is 5225472, while the sum is 58.

The square root of 83697889 is about 9148.6550377637. The cubic root of 83697889 is about 437.4262432397.

The spelling of 83697889 in words is "eighty-three million, six hundred ninety-seven thousand, eight hundred eighty-nine".