89733987 has 20 divisors (see below), whose sum is σ = 153197616. Its totient is φ = 51276240.

The previous prime is 89733977. The next prime is 89734003. The reversal of 89733987 is 78933798.

It is not a de Polignac number, because 89733987 - 2¹⁴ = 89717603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89733907) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78564 + ... + 79697.

Almost surely, 2^89733987 is an apocalyptic number.

89733987 is a deficient number, since it is larger than the sum of its proper divisors (63463629).

89733987 is a wasteful number, since it uses less digits than its factorization.

89733987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158280 (or 158271 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 89733987 is about 9472.8024892320. The cubic root of 89733987 is about 447.6985160032.

The spelling of 89733987 in words is "eighty-nine million, seven hundred thirty-three thousand, nine hundred eighty-seven".