98489987 has 2 divisors, whose sum is σ = 98489988. Its totient is φ = 98489986.

The previous prime is 98489983. The next prime is 98490001. The reversal of 98489987 is 78998489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98489987 - 2² = 98489983 is a prime.

It is not a weakly prime, because it can be changed into another prime (98489983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49244993 + 49244994.

It is an arithmetic number, because the mean of its divisors is an integer number (49244994).

Almost surely, 2^98489987 is an apocalyptic number.

98489987 is a deficient number, since it is larger than the sum of its proper divisors (1).

98489987 is an equidigital number, since it uses as much as digits as its factorization.

98489987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 62.

The square root of 98489987 is about 9924.2121601667. The cubic root of 98489987 is about 461.8107378048.

The spelling of 98489987 in words is "ninety-eight million, four hundred eighty-nine thousand, nine hundred eighty-seven".