83389989 has 8 divisors (see below), whose sum is σ = 113009632. Its totient is φ = 54681840.

The previous prime is 83389987. The next prime is 83389991. The reversal of 83389989 is 98998338.

It is an interprime number because it is at equal distance from previous prime (83389987) and next prime (83389991).

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

It is not a de Polignac number, because 83389989 - 2¹ = 83389987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83389987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227659 + ... + 228024.

It is an arithmetic number, because the mean of its divisors is an integer number (14126204).

Almost surely, 2^83389989 is an apocalyptic number.

It is an amenable number.

83389989 is a deficient number, since it is larger than the sum of its proper divisors (29619643).

83389989 is a wasteful number, since it uses less digits than its factorization.

83389989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455747.

The product of its digits is 3359232, while the sum is 57.

The square root of 83389989 is about 9131.8119231618. The cubic root of 83389989 is about 436.8891965113.

The spelling of 83389989 in words is "eighty-three million, three hundred eighty-nine thousand, nine hundred eighty-nine".