83881889 has 8 divisors (see below), whose sum is σ = 103239360. Its totient is φ = 66368016.

The previous prime is 83881879. The next prime is 83881909. The reversal of 83881889 is 98818838.

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

It is not a de Polignac number, because 83881889 - 2⁴ = 83881873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83881889.

It is not an unprimeable number, because it can be changed into a prime (83881879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460799 + ... + 460980.

It is an arithmetic number, because the mean of its divisors is an integer number (12904920).

Almost surely, 2^83881889 is an apocalyptic number.

It is an amenable number.

83881889 is a deficient number, since it is larger than the sum of its proper divisors (19357471).

83881889 is a wasteful number, since it uses less digits than its factorization.

83881889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921799.

The product of its digits is 884736, while the sum is 53.

The square root of 83881889 is about 9158.7056399908. The cubic root of 83881889 is about 437.7465520777.

The spelling of 83881889 in words is "eighty-three million, eight hundred eighty-one thousand, eight hundred eighty-nine".