99938440949 has 2 divisors, whose sum is σ = 99938440950. Its totient is φ = 99938440948.

The previous prime is 99938440919. The next prime is 99938440951. The reversal of 99938440949 is 94904483999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64625266225 + 35313174724 = 254215^2 + 187918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99938440949 is a prime.

Together with 99938440951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99938440919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49969220474 + 49969220475.

It is an arithmetic number, because the mean of its divisors is an integer number (49969220475).

Almost surely, 2^99938440949 is an apocalyptic number.

It is an amenable number.

99938440949 is a deficient number, since it is larger than the sum of its proper divisors (1).

99938440949 is an equidigital number, since it uses as much as digits as its factorization.

99938440949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90699264, while the sum is 68.

The spelling of 99938440949 in words is "ninety-nine billion, nine hundred thirty-eight million, four hundred forty thousand, nine hundred forty-nine".