99381241 has 2 divisors, whose sum is σ = 99381242. Its totient is φ = 99381240.

The previous prime is 99381221. The next prime is 99381277. The reversal of 99381241 is 14218399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98010000 + 1371241 = 9900^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 99381241 - 2⁵ = 99381209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99381241.

It is not a weakly prime, because it can be changed into another prime (99381221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49690620 + 49690621.

It is an arithmetic number, because the mean of its divisors is an integer number (49690621).

Almost surely, 2^99381241 is an apocalyptic number.

It is an amenable number.

99381241 is a deficient number, since it is larger than the sum of its proper divisors (1).

99381241 is an equidigital number, since it uses as much as digits as its factorization.

99381241 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 99381241 is about 9969.0140435251. The cubic root of 99381241 is about 463.1995603780.

The spelling of 99381241 in words is "ninety-nine million, three hundred eighty-one thousand, two hundred forty-one".