99998438 has 16 divisors (see below), whose sum is σ = 157492080. Its totient is φ = 47552736.

The previous prime is 99998429. The next prime is 99998441. The reversal of 99998438 is 83489999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8981 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (9843255).

Almost surely, 2^99998438 is an apocalyptic number.

99998438 is a deficient number, since it is larger than the sum of its proper divisors (57493642).

99998438 is a wasteful number, since it uses less digits than its factorization.

99998438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831.

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

The square root of 99998438 is about 9999.9218996950. The cubic root of 99998438 is about 464.1564666281.

The spelling of 99998438 in words is "ninety-nine million, nine hundred ninety-eight thousand, four hundred thirty-eight".