83836989 has 12 divisors (see below), whose sum is σ = 125004672. Its totient is φ = 54088200.

The previous prime is 83836981. The next prime is 83837009. The reversal of 83836989 is 98963838.

It is not a de Polignac number, because 83836989 - 2³ = 83836981 is a prime.

It is a super-2 number, since 2×83836989² = 14057281449172242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83836981) 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, 149967 + ... + 150524.

It is an arithmetic number, because the mean of its divisors is an integer number (10417056).

Almost surely, 2^83836989 is an apocalyptic number.

It is an amenable number.

83836989 is a deficient number, since it is larger than the sum of its proper divisors (41167683).

83836989 is a wasteful number, since it uses less digits than its factorization.

83836989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300528 (or 300525 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 83836989 is about 9156.2540921493. The cubic root of 83836989 is about 437.6684329970.

The spelling of 83836989 in words is "eighty-three million, eight hundred thirty-six thousand, nine hundred eighty-nine".