89087999 has 32 divisors (see below), whose sum is σ = 121658880. Its totient is φ = 62985600.

The previous prime is 89087981. The next prime is 89088047. The reversal of 89087999 is 99978098.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89087999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89087969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60332 + ... + 61790.

It is an arithmetic number, because the mean of its divisors is an integer number (3801840).

Almost surely, 2^89087999 is an apocalyptic number.

89087999 is a deficient number, since it is larger than the sum of its proper divisors (32570881).

89087999 is a wasteful number, since it uses less digits than its factorization.

89087999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 89087999 is about 9438.6439174280. The cubic root of 89087999 is about 446.6216120616.

The spelling of 89087999 in words is "eighty-nine million, eighty-seven thousand, nine hundred ninety-nine".