98001999 has 6 divisors (see below), whose sum is σ = 141558456. Its totient is φ = 65334660.

The previous prime is 98001997. The next prime is 98002007. The reversal of 98001999 is 99910089.

It is not a de Polignac number, because 98001999 - 2¹ = 98001997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98001997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5444547 + ... + 5444564.

It is an arithmetic number, because the mean of its divisors is an integer number (23593076).

Almost surely, 2^98001999 is an apocalyptic number.

98001999 is a deficient number, since it is larger than the sum of its proper divisors (43556457).

98001999 is a wasteful number, since it uses less digits than its factorization.

98001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10889117 (or 10889114 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 98001999 is about 9899.5959008436. The cubic root of 98001999 is about 461.0467639676.

It can be divided in two parts, 9 and 8001999, that added together give a palindrome (8002008).

The spelling of 98001999 in words is "ninety-eight million, one thousand, nine hundred ninety-nine".