8899987 has 2 divisors, whose sum is σ = 8899988. Its totient is φ = 8899986.

The previous prime is 8899949. The next prime is 8899997. The reversal of 8899987 is 7899988.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8899987 - 2¹¹ = 8897939 is a prime.

It is not a weakly prime, because it can be changed into another prime (8899927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4449993 + 4449994.

It is an arithmetic number, because the mean of its divisors is an integer number (4449994).

Almost surely, 2^8899987 is an apocalyptic number.

8899987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8899987 is an equidigital number, since it uses as much as digits as its factorization.

8899987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 58.

The square root of 8899987 is about 2983.2845992295. The cubic root of 8899987 is about 207.2350089049.

Subtracting from 8899987 its reverse (7899988), we obtain a palindrome (999999).

The spelling of 8899987 in words is "eight million, eight hundred ninety-nine thousand, nine hundred eighty-seven".