3961892243 has 4 divisors (see below), whose sum is σ = 3962036880. Its totient is φ = 3961747608.

The previous prime is 3961892201. The next prime is 3961892251. The reversal of 3961892243 is 3422981693.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3961892243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3961892273) 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, 17255 + ... + 90672.

It is an arithmetic number, because the mean of its divisors is an integer number (990509220).

Almost surely, 2^3961892243 is an apocalyptic number.

3961892243 is a deficient number, since it is larger than the sum of its proper divisors (144637).

3961892243 is a wasteful number, since it uses less digits than its factorization.

3961892243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144636.

The product of its digits is 559872, while the sum is 47.

The square root of 3961892243 is about 62943.5639521627. The cubic root of 3961892243 is about 1582.3439337236.

The spelling of 3961892243 in words is "three billion, nine hundred sixty-one million, eight hundred ninety-two thousand, two hundred forty-three".