83236989 has 24 divisors (see below), whose sum is σ = 126211680. Its totient is φ = 48700960.

The previous prime is 83236987. The next prime is 83236991. The reversal of 83236989 is 98963238.

It is an interprime number because it is at equal distance from previous prime (83236987) and next prime (83236991).

It is not a de Polignac number, because 83236989 - 2¹ = 83236987 is a prime.

It is a super-2 number, since 2×83236989² = 13856792675572242, 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 (83236987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6574 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (5258820).

Almost surely, 2^83236989 is an apocalyptic number.

It is an amenable number.

83236989 is a deficient number, since it is larger than the sum of its proper divisors (42974691).

83236989 is a wasteful number, since it uses less digits than its factorization.

83236989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961 (or 7950 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 83236989 is about 9123.4307691789. The cubic root of 83236989 is about 436.6218384013.

The spelling of 83236989 in words is "eighty-three million, two hundred thirty-six thousand, nine hundred eighty-nine".