4433991 has 16 divisors (see below), whose sum is σ = 6303744. Its totient is φ = 2762624.

The previous prime is 4433981. The next prime is 4433999. The reversal of 4433991 is 1993344.

It is a cyclic number.

It is not a de Polignac number, because 4433991 - 2⁵ = 4433959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4433999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11386 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (393984).

Almost surely, 2^4433991 is an apocalyptic number.

4433991 is a deficient number, since it is larger than the sum of its proper divisors (1869753).

4433991 is a wasteful number, since it uses less digits than its factorization.

4433991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630.

The product of its digits is 11664, while the sum is 33.

The square root of 4433991 is about 2105.7043952084. The cubic root of 4433991 is about 164.2851350416.

The spelling of 4433991 in words is "four million, four hundred thirty-three thousand, nine hundred ninety-one".