89968987 has 2 divisors, whose sum is σ = 89968988. Its totient is φ = 89968986.

The previous prime is 89968979. The next prime is 89969003. The reversal of 89968987 is 78986998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89968987 - 2³ = 89968979 is a prime.

It is not a weakly prime, because it can be changed into another prime (89968187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44984493 + 44984494.

It is an arithmetic number, because the mean of its divisors is an integer number (44984494).

Almost surely, 2^89968987 is an apocalyptic number.

89968987 is a deficient number, since it is larger than the sum of its proper divisors (1).

89968987 is an equidigital number, since it uses as much as digits as its factorization.

89968987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 64.

The square root of 89968987 is about 9485.1983110529. The cubic root of 89968987 is about 448.0889939993.

The spelling of 89968987 in words is "eighty-nine million, nine hundred sixty-eight thousand, nine hundred eighty-seven".