99702439 has 2 divisors, whose sum is σ = 99702440. Its totient is φ = 99702438.

The previous prime is 99702437. The next prime is 99702497. The reversal of 99702439 is 93420799.

It is a weak prime.

It is an emirp because it is prime and its reverse (93420799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99702439 - 2¹ = 99702437 is a prime.

Together with 99702437, it forms a pair of twin primes.

99702439 is a modest number, since divided by 2439 gives 997 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 99702395 and 99702404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99702437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49851219 + 49851220.

It is an arithmetic number, because the mean of its divisors is an integer number (49851220).

Almost surely, 2^99702439 is an apocalyptic number.

99702439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99702439 is an equidigital number, since it uses as much as digits as its factorization.

99702439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 99702439 is about 9985.1108656840. The cubic root of 99702439 is about 463.6980406909.

The spelling of 99702439 in words is "ninety-nine million, seven hundred two thousand, four hundred thirty-nine".