9998149139 has 16 divisors (see below), whose sum is σ = 11206428000. Its totient is φ = 8839964160.

The previous prime is 9998149121. The next prime is 9998149141. The reversal of 9998149139 is 9319418999.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9998149139 is a prime.

It is a super-4 number, since 4×9998149139⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998149159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1736237 + ... + 1741985.

It is an arithmetic number, because the mean of its divisors is an integer number (700401750).

Almost surely, 2^9998149139 is an apocalyptic number.

9998149139 is a deficient number, since it is larger than the sum of its proper divisors (1208278861).

9998149139 is a wasteful number, since it uses less digits than its factorization.

9998149139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10070.

The product of its digits is 5668704, while the sum is 62.

The square root of 9998149139 is about 99990.7452667496. The cubic root of 9998149139 is about 2154.3017631924.

The spelling of 9998149139 in words is "nine billion, nine hundred ninety-eight million, one hundred forty-nine thousand, one hundred thirty-nine".