99998290 has 32 divisors (see below), whose sum is σ = 206064000. Its totient is φ = 34226304.

The previous prime is 99998257. The next prime is 99998291. The reversal of 99998290 is 9289999.

It is not an unprimeable number, because it can be changed into a prime (99998291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65961 + ... + 67459.

It is an arithmetic number, because the mean of its divisors is an integer number (6439500).

Almost surely, 2^99998290 is an apocalyptic number.

99998290 is an abundant number, since it is smaller than the sum of its proper divisors (106065710).

99998290 is a wasteful number, since it uses less digits than its factorization.

99998290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its (nonzero) digits is 944784, while the sum is 55.

The square root of 99998290 is about 9999.9144996345. The cubic root of 99998290 is about 464.1562376406.

The spelling of 99998290 in words is "ninety-nine million, nine hundred ninety-eight thousand, two hundred ninety".