99388439 has 2 divisors, whose sum is σ = 99388440. Its totient is φ = 99388438.

The previous prime is 99388363. The next prime is 99388463. The reversal of 99388439 is 93488399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99388439 - 2¹² = 99384343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99388039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49694219 + 49694220.

It is an arithmetic number, because the mean of its divisors is an integer number (49694220).

Almost surely, 2^99388439 is an apocalyptic number.

99388439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99388439 is an equidigital number, since it uses as much as digits as its factorization.

99388439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 99388439 is about 9969.3750556391. The cubic root of 99388439 is about 463.2107430047.

The spelling of 99388439 in words is "ninety-nine million, three hundred eighty-eight thousand, four hundred thirty-nine".