99998490 has 16 divisors (see below), whose sum is σ = 239996448. Its totient is φ = 26666256.

The previous prime is 99998473. The next prime is 99998491. The reversal of 99998490 is 9489999.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99998490.

It is not an unprimeable number, because it can be changed into a prime (99998491) 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 7 ways as a sum of consecutive naturals, for example, 1666612 + ... + 1666671.

It is an arithmetic number, because the mean of its divisors is an integer number (14999778).

Almost surely, 2^99998490 is an apocalyptic number.

99998490 is an abundant number, since it is smaller than the sum of its proper divisors (139997958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99998490 is a wasteful number, since it uses less digits than its factorization.

99998490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333293.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 99998490 is about 9999.9244997150. The cubic root of 99998490 is about 464.1565470831.

The spelling of 99998490 in words is "ninety-nine million, nine hundred ninety-eight thousand, four hundred ninety".