4431749 has 16 divisors (see below), whose sum is σ = 5296896. Its totient is φ = 3628800.

The previous prime is 4431743. The next prime is 4431787. The reversal of 4431749 is 9471344.

It is a happy number.

It is not a de Polignac number, because 4431749 - 2⁴ = 4431733 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431743) 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, 18269 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (331056).

Almost surely, 2^4431749 is an apocalyptic number.

It is an amenable number.

4431749 is a deficient number, since it is larger than the sum of its proper divisors (865147).

4431749 is a wasteful number, since it uses less digits than its factorization.

4431749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 12096, while the sum is 32.

The square root of 4431749 is about 2105.1719644723. The cubic root of 4431749 is about 164.2574407011.

It can be divided in two parts, 44 and 31749, that multiplied together give a triangular number (1396956 = T₁₆₇₁).

The spelling of 4431749 in words is "four million, four hundred thirty-one thousand, seven hundred forty-nine".