98189905 has 16 divisors (see below), whose sum is σ = 129163968. Its totient is φ = 71064000.

The previous prime is 98189893. The next prime is 98189939. The reversal of 98189905 is 50998189.

It is a happy number.

It is not a de Polignac number, because 98189905 - 2¹⁷ = 98058833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7375 + ... + 15835.

It is an arithmetic number, because the mean of its divisors is an integer number (8072748).

Almost surely, 2^98189905 is an apocalyptic number.

It is an amenable number.

98189905 is a deficient number, since it is larger than the sum of its proper divisors (30974063).

98189905 is a wasteful number, since it uses less digits than its factorization.

98189905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8688.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 98189905 is about 9909.0819453671. The cubic root of 98189905 is about 461.3412414394.

The spelling of 98189905 in words is "ninety-eight million, one hundred eighty-nine thousand, nine hundred five".