98906409 has 24 divisors (see below), whose sum is σ = 163567872. Its totient is φ = 56416320.

The previous prime is 98906387. The next prime is 98906447. The reversal of 98906409 is 90460989.

It is not a de Polignac number, because 98906409 - 2¹² = 98902313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98906449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46912 + ... + 48974.

It is an arithmetic number, because the mean of its divisors is an integer number (6815328).

Almost surely, 2^98906409 is an apocalyptic number.

It is an amenable number.

98906409 is a deficient number, since it is larger than the sum of its proper divisors (64661463).

98906409 is a wasteful number, since it uses less digits than its factorization.

98906409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 98906409 is about 9945.1701342913. The cubic root of 98906409 is about 462.4606778354.

The spelling of 98906409 in words is "ninety-eight million, nine hundred six thousand, four hundred nine".