4391233 has 12 divisors (see below), whose sum is σ = 5573232. Its totient is φ = 3421320.

The previous prime is 4391227. The next prime is 4391249. The reversal of 4391233 is 3321934.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4391233 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 3⁴ + 9 + 1 + 2³ + 3⁹ + 3¹¹ .

4391233 is a lucky number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 4391198 and 4391207.

It is not an unprimeable number, because it can be changed into a prime (4391263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3535 + ... + 4612.

It is an arithmetic number, because the mean of its divisors is an integer number (464436).

Almost surely, 2^4391233 is an apocalyptic number.

It is an amenable number.

4391233 is a deficient number, since it is larger than the sum of its proper divisors (1181999).

4391233 is a wasteful number, since it uses less digits than its factorization.

4391233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172 (or 8165 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 4391233 is about 2095.5269027144. The cubic root of 4391233 is about 163.7553485812.

It can be divided in two parts, 4391 and 233, that added together give a square (4624 = 68²).

The spelling of 4391233 in words is "four million, three hundred ninety-one thousand, two hundred thirty-three".