3891224 has 32 divisors (see below), whose sum is σ = 7603200. Its totient is φ = 1865760.

The previous prime is 3891203. The next prime is 3891229. The reversal of 3891224 is 4221983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891229) 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, 29639 + ... + 29769.

It is an arithmetic number, because the mean of its divisors is an integer number (237600).

Almost surely, 2^3891224 is an apocalyptic number.

It is an amenable number.

3891224 is a deficient number, since it is larger than the sum of its proper divisors (3711976).

3891224 is a wasteful number, since it uses less digits than its factorization.

3891224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 259 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 3891224 is about 1972.6185642440. The cubic root of 3891224 is about 157.2879349689.

The spelling of 3891224 in words is "three million, eight hundred ninety-one thousand, two hundred twenty-four".