99998854139 has 2 divisors, whose sum is σ = 99998854140. Its totient is φ = 99998854138.

The previous prime is 99998854099. The next prime is 99998854157. The reversal of 99998854139 is 93145889999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99998854139 - 2²⁰ = 99997805563 is a prime.

It is a super-2 number, since 2×99998854139² (a number of 23 digits) contains 22 as substring.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999427069 + 49999427070.

It is an arithmetic number, because the mean of its divisors is an integer number (49999427070).

Almost surely, 2^99998854139 is an apocalyptic number.

99998854139 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998854139 is an equidigital number, since it uses as much as digits as its factorization.

99998854139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226748160, while the sum is 74.

The spelling of 99998854139 in words is "ninety-nine billion, nine hundred ninety-eight million, eight hundred fifty-four thousand, one hundred thirty-nine".