3922891 has 8 divisors (see below), whose sum is σ = 4575200. Its totient is φ = 3362184.

The previous prime is 3922871. The next prime is 3922907. The reversal of 3922891 is 1982293.

It is not a de Polignac number, because 3922891 - 2¹¹ = 3920843 is a prime.

3922891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3922871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5376 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (571900).

Almost surely, 2^3922891 is an apocalyptic number.

3922891 is a deficient number, since it is larger than the sum of its proper divisors (652309).

3922891 is an equidigital number, since it uses as much as digits as its factorization.

3922891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11458 (or 11444 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 3922891 is about 1980.6289405136. The cubic root of 3922891 is about 157.7134554350.

The spelling of 3922891 in words is "three million, nine hundred twenty-two thousand, eight hundred ninety-one".