4423749 has 8 divisors (see below), whose sum is σ = 6434592. Its totient is φ = 2681040.

The previous prime is 4423733. The next prime is 4423807. The reversal of 4423749 is 9473244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4423749 - 2⁴ = 4423733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 134053 = 4423749 / (4 + 4 + 2 + 3 + 7 + 4 + 9).

It is a d-powerful number, because it can be written as 4² + 4⁷ + 2¹⁵ + 3¹¹ + 7⁴ + 4¹¹ + 9³ .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66994 + ... + 67059.

It is an arithmetic number, because the mean of its divisors is an integer number (804324).

Almost surely, 2^4423749 is an apocalyptic number.

It is an amenable number.

4423749 is a deficient number, since it is larger than the sum of its proper divisors (2010843).

4423749 is a wasteful number, since it uses less digits than its factorization.

4423749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134067.

The product of its digits is 24192, while the sum is 33.

The square root of 4423749 is about 2103.2710239054. The cubic root of 4423749 is about 164.1585443801.

The spelling of 4423749 in words is "four million, four hundred twenty-three thousand, seven hundred forty-nine".