99241381 has 2 divisors, whose sum is σ = 99241382. Its totient is φ = 99241380.

The previous prime is 99241349. The next prime is 99241391. The reversal of 99241381 is 18314299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67092481 + 32148900 = 8191^2 + 5670^2 .

It is a cyclic number.

It is not a de Polignac number, because 99241381 - 2⁵ = 99241349 is a prime.

It is a super-2 number, since 2×99241381² = 19697703405574322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99241381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99241391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49620690 + 49620691.

It is an arithmetic number, because the mean of its divisors is an integer number (49620691).

Almost surely, 2^99241381 is an apocalyptic number.

It is an amenable number.

99241381 is a deficient number, since it is larger than the sum of its proper divisors (1).

99241381 is an equidigital number, since it uses as much as digits as its factorization.

99241381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 99241381 is about 9961.9968379838. The cubic root of 99241381 is about 462.9821702430.

The spelling of 99241381 in words is "ninety-nine million, two hundred forty-one thousand, three hundred eighty-one".