3991741099 has 4 divisors (see below), whose sum is σ = 4089100680. Its totient is φ = 3894381520.

The previous prime is 3991741097. The next prime is 3991741109. The reversal of 3991741099 is 9901471993.

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

It is a cyclic number.

It is not a de Polignac number, because 3991741099 - 2¹ = 3991741097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3991741093) 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 in 3 ways as a sum of consecutive naturals, for example, 48679729 + ... + 48679810.

It is an arithmetic number, because the mean of its divisors is an integer number (1022275170).

Almost surely, 2^3991741099 is an apocalyptic number.

3991741099 is a deficient number, since it is larger than the sum of its proper divisors (97359581).

3991741099 is an equidigital number, since it uses as much as digits as its factorization.

3991741099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97359580.

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 3991741099 is about 63180.2271205161. The cubic root of 3991741099 is about 1586.3077835117.

The spelling of 3991741099 in words is "three billion, nine hundred ninety-one million, seven hundred forty-one thousand, ninety-nine".