241009991 has 2 divisors, whose sum is σ = 241009992. Its totient is φ = 241009990.

The previous prime is 241009987. The next prime is 241010017. The reversal of 241009991 is 199900142.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 241009991 - 2² = 241009987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241009591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120504995 + 120504996.

It is an arithmetic number, because the mean of its divisors is an integer number (120504996).

Almost surely, 2^241009991 is an apocalyptic number.

241009991 is a deficient number, since it is larger than the sum of its proper divisors (1).

241009991 is an equidigital number, since it uses as much as digits as its factorization.

241009991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 241009991 is about 15524.4964813678. The cubic root of 241009991 is about 622.3170247640.

The spelling of 241009991 in words is "two hundred forty-one million, nine thousand, nine hundred ninety-one".