99402439 has 2 divisors, whose sum is σ = 99402440. Its totient is φ = 99402438.

The previous prime is 99402437. The next prime is 99402449. The reversal of 99402439 is 93420499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99402439 - 2¹ = 99402437 is a prime.

It is a super-3 number, since 3×99402439³ (a number of 25 digits) contains 333 as substring.

Together with 99402437, it forms a pair of twin primes.

99402439 is a modest number, since divided by 2439 gives 994 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99402437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49701219 + 49701220.

It is an arithmetic number, because the mean of its divisors is an integer number (49701220).

Almost surely, 2^99402439 is an apocalyptic number.

99402439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99402439 is an equidigital number, since it uses as much as digits as its factorization.

99402439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 99402439 is about 9970.0771812459. The cubic root of 99402439 is about 463.2324914964.

The spelling of 99402439 in words is "ninety-nine million, four hundred two thousand, four hundred thirty-nine".