98391909 has 16 divisors (see below), whose sum is σ = 163560960. Its totient is φ = 51112560.

The previous prime is 98391859. The next prime is 98391913. The reversal of 98391909 is 90919389.

It is not a de Polignac number, because 98391909 - 2¹⁵ = 98359141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98391919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212739 + ... + 213200.

It is an arithmetic number, because the mean of its divisors is an integer number (10222560).

Almost surely, 2^98391909 is an apocalyptic number.

It is an amenable number.

98391909 is a deficient number, since it is larger than the sum of its proper divisors (65169051).

98391909 is a wasteful number, since it uses less digits than its factorization.

98391909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425960.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 98391909 is about 9919.2695799640. The cubic root of 98391909 is about 461.6573939035.

The spelling of 98391909 in words is "ninety-eight million, three hundred ninety-one thousand, nine hundred nine".