99944998 has 4 divisors (see below), whose sum is σ = 149917500. Its totient is φ = 49972498.

The previous prime is 99944981. The next prime is 99945019. The reversal of 99944998 is 89944999.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24986248 + ... + 24986251.

It is an arithmetic number, because the mean of its divisors is an integer number (37479375).

Almost surely, 2^99944998 is an apocalyptic number.

99944998 is a deficient number, since it is larger than the sum of its proper divisors (49972502).

99944998 is a wasteful number, since it uses less digits than its factorization.

99944998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49972501.

The product of its digits is 7558272, while the sum is 61.

The square root of 99944998 is about 9997.2495217435. The cubic root of 99944998 is about 464.0737688648.

Subtracting from 99944998 its reverse (89944999), we obtain a palindrome (9999999).

The spelling of 99944998 in words is "ninety-nine million, nine hundred forty-four thousand, nine hundred ninety-eight".