99998868439 has 2 divisors, whose sum is σ = 99998868440. Its totient is φ = 99998868438.

The previous prime is 99998868367. The next prime is 99998868451. The reversal of 99998868439 is 93486889999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99998868439 - 2¹¹ = 99998866391 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999434219 + 49999434220.

It is an arithmetic number, because the mean of its divisors is an integer number (49999434220).

Almost surely, 2^99998868439 is an apocalyptic number.

99998868439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998868439 is an equidigital number, since it uses as much as digits as its factorization.

99998868439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2176782336, while the sum is 82.

The spelling of 99998868439 in words is "ninety-nine billion, nine hundred ninety-eight million, eight hundred sixty-eight thousand, four hundred thirty-nine".