98649999 has 12 divisors (see below), whose sum is σ = 162850896. Its totient is φ = 56371392.

The previous prime is 98649989. The next prime is 98650007. The reversal of 98649999 is 99994689.

It is not a de Polignac number, because 98649999 - 2²¹ = 96552847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1565873 = 98649999 / (9 + 8 + 6 + 4 + 9 + 9 + 9 + 9).

98649999 is a modest number, since divided by 9999 gives 9864 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98649959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782874 + ... + 782999.

It is an arithmetic number, because the mean of its divisors is an integer number (13570908).

Almost surely, 2^98649999 is an apocalyptic number.

98649999 is a deficient number, since it is larger than the sum of its proper divisors (64200897).

98649999 is a wasteful number, since it uses less digits than its factorization.

98649999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565886 (or 1565883 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The square root of 98649999 is about 9932.2705863262. The cubic root of 98649999 is about 462.0606964726.

The spelling of 98649999 in words is "ninety-eight million, six hundred forty-nine thousand, nine hundred ninety-nine".