4091989227 has 4 divisors (see below), whose sum is σ = 5455985640. Its totient is φ = 2727992816.

The previous prime is 4091989219. The next prime is 4091989249. The reversal of 4091989227 is 7229891904.

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 4091989227 - 2³ = 4091989219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4091989227.

It is not an unprimeable number, because it can be changed into a prime (4091989217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681998202 + ... + 681998207.

It is an arithmetic number, because the mean of its divisors is an integer number (1363996410).

Almost surely, 2^4091989227 is an apocalyptic number.

4091989227 is a deficient number, since it is larger than the sum of its proper divisors (1363996413).

4091989227 is a wasteful number, since it uses less digits than its factorization.

4091989227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363996412.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 4091989227 is about 63968.6581616341. The cubic root of 4091989227 is about 1599.4775933829.

The spelling of 4091989227 in words is "four billion, ninety-one million, nine hundred eighty-nine thousand, two hundred twenty-seven".