99984398 has 4 divisors (see below), whose sum is σ = 149976600. Its totient is φ = 49992198.

The previous prime is 99984383. The next prime is 99984413. The reversal of 99984398 is 89348999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89348999 = 4357 ⋅20507.

It is an interprime number because it is at equal distance from previous prime (99984383) and next prime (99984413).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24996098 + ... + 24996101.

It is an arithmetic number, because the mean of its divisors is an integer number (37494150).

Almost surely, 2^99984398 is an apocalyptic number.

99984398 is a deficient number, since it is larger than the sum of its proper divisors (49992202).

99984398 is a wasteful number, since it uses less digits than its factorization.

99984398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49992201.

The product of its digits is 5038848, while the sum is 59.

The square root of 99984398 is about 9999.2198695698. The cubic root of 99984398 is about 464.1347427494.

The spelling of 99984398 in words is "ninety-nine million, nine hundred eighty-four thousand, three hundred ninety-eight".