99229439 has 2 divisors, whose sum is σ = 99229440. Its totient is φ = 99229438.

The previous prime is 99229421. The next prime is 99229441. The reversal of 99229439 is 93492299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99229439 - 2¹⁶ = 99163903 is a prime.

It is a Sophie Germain prime.

Together with 99229441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99229393 and 99229402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99229469) 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 as a sum of consecutive naturals, namely, 49614719 + 49614720.

It is an arithmetic number, because the mean of its divisors is an integer number (49614720).

Almost surely, 2^99229439 is an apocalyptic number.

99229439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99229439 is an equidigital number, since it uses as much as digits as its factorization.

99229439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 47.

The square root of 99229439 is about 9961.3974421263. The cubic root of 99229439 is about 462.9635988406.

The spelling of 99229439 in words is "ninety-nine million, two hundred twenty-nine thousand, four hundred thirty-nine".