98495989 has 2 divisors, whose sum is σ = 98495990. Its totient is φ = 98495988.

The previous prime is 98495987. The next prime is 98496023. The reversal of 98495989 is 98959489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95707089 + 2788900 = 9783^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 98495989 - 2¹ = 98495987 is a prime.

Together with 98495987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98495987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49247994 + 49247995.

It is an arithmetic number, because the mean of its divisors is an integer number (49247995).

Almost surely, 2^98495989 is an apocalyptic number.

It is an amenable number.

98495989 is a deficient number, since it is larger than the sum of its proper divisors (1).

98495989 is an equidigital number, since it uses as much as digits as its factorization.

98495989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 61.

The square root of 98495989 is about 9924.5145473217. The cubic root of 98495989 is about 461.8201185612.

The spelling of 98495989 in words is "ninety-eight million, four hundred ninety-five thousand, nine hundred eighty-nine".