4401891 has 16 divisors (see below), whose sum is σ = 7023520. Its totient is φ = 2708640.

The previous prime is 4401871. The next prime is 4401899. The reversal of 4401891 is 1981044.

It is not a de Polignac number, because 4401891 - 2¹³ = 4393699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4401899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5920 + ... + 6621.

It is an arithmetic number, because the mean of its divisors is an integer number (438970).

Almost surely, 2^4401891 is an apocalyptic number.

4401891 is a deficient number, since it is larger than the sum of its proper divisors (2621629).

4401891 is a wasteful number, since it uses less digits than its factorization.

4401891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563 (or 12557 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 4401891 is about 2098.0683973598. The cubic root of 4401891 is about 163.8877255538.

The spelling of 4401891 in words is "four million, four hundred one thousand, eight hundred ninety-one".