99990241 has 4 divisors (see below), whose sum is σ = 107681812. Its totient is φ = 92298672.

The previous prime is 99990239. The next prime is 99990263. The reversal of 99990241 is 14209999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12960000 + 87030241 = 3600^2 + 9329^2 .

It is a cyclic number.

It is not a de Polignac number, because 99990241 - 2¹ = 99990239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99990281) 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 in 3 ways as a sum of consecutive naturals, for example, 3845766 + ... + 3845791.

It is an arithmetic number, because the mean of its divisors is an integer number (26920453).

Almost surely, 2^99990241 is an apocalyptic number.

It is an amenable number.

99990241 is a deficient number, since it is larger than the sum of its proper divisors (7691571).

99990241 is a wasteful number, since it uses less digits than its factorization.

99990241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691570.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 99990241 is about 9999.5120380947. The cubic root of 99990241 is about 464.1437837816.

The spelling of 99990241 in words is "ninety-nine million, nine hundred ninety thousand, two hundred forty-one".