99247039 has 2 divisors, whose sum is σ = 99247040. Its totient is φ = 99247038.

The previous prime is 99247021. The next prime is 99247067. The reversal of 99247039 is 93074299.

It is a weak prime.

It is an emirp because it is prime and its reverse (93074299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99247039 - 2⁷ = 99246911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99246986 and 99247004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99247069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49623519 + 49623520.

It is an arithmetic number, because the mean of its divisors is an integer number (49623520).

Almost surely, 2^99247039 is an apocalyptic number.

99247039 is a deficient number, since it is larger than the sum of its proper divisors (1).

99247039 is an equidigital number, since it uses as much as digits as its factorization.

99247039 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 99247039 is about 9962.2808131472. The cubic root of 99247039 is about 462.9909686673.

The spelling of 99247039 in words is "ninety-nine million, two hundred forty-seven thousand, thirty-nine".