841749899 has 2 divisors, whose sum is σ = 841749900. Its totient is φ = 841749898.

The previous prime is 841749893. The next prime is 841749947. The reversal of 841749899 is 998947148.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-841749899 is a prime.

It is not a weakly prime, because it can be changed into another prime (841749893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420874949 + 420874950.

It is an arithmetic number, because the mean of its divisors is an integer number (420874950).

Almost surely, 2^841749899 is an apocalyptic number.

841749899 is a deficient number, since it is larger than the sum of its proper divisors (1).

841749899 is an equidigital number, since it uses as much as digits as its factorization.

841749899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 59.

The square root of 841749899 is about 29012.9264122046. The cubic root of 841749899 is about 944.1935390758.

The spelling of 841749899 in words is "eight hundred forty-one million, seven hundred forty-nine thousand, eight hundred ninety-nine".