99948391 has 2 divisors, whose sum is σ = 99948392. Its totient is φ = 99948390.

The previous prime is 99948361. The next prime is 99948403. The reversal of 99948391 is 19384999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99948391 - 2⁷ = 99948263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99948311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49974195 + 49974196.

It is an arithmetic number, because the mean of its divisors is an integer number (49974196).

Almost surely, 2^99948391 is an apocalyptic number.

99948391 is a deficient number, since it is larger than the sum of its proper divisors (1).

99948391 is an equidigital number, since it uses as much as digits as its factorization.

99948391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 52.

The square root of 99948391 is about 9997.4192169779. The cubic root of 99948391 is about 464.0790203682.

The spelling of 99948391 in words is "ninety-nine million, nine hundred forty-eight thousand, three hundred ninety-one".