99438863 has 2 divisors, whose sum is σ = 99438864. Its totient is φ = 99438862.

The previous prime is 99438851. The next prime is 99438877. The reversal of 99438863 is 36883499.

It is a weak prime.

It is an emirp because it is prime and its reverse (36883499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99438863 - 2²⁰ = 98390287 is a prime.

It is a super-3 number, since 3×99438863³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99438803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49719431 + 49719432.

It is an arithmetic number, because the mean of its divisors is an integer number (49719432).

Almost surely, 2^99438863 is an apocalyptic number.

99438863 is a deficient number, since it is larger than the sum of its proper divisors (1).

99438863 is an equidigital number, since it uses as much as digits as its factorization.

99438863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 99438863 is about 9971.9036798397. The cubic root of 99438863 is about 463.2890652920.

The spelling of 99438863 in words is "ninety-nine million, four hundred thirty-eight thousand, eight hundred sixty-three".