4239447 has 16 divisors (see below), whose sum is σ = 5847552. Its totient is φ = 2730560.

The previous prime is 4239419. The next prime is 4239449. The reversal of 4239447 is 7449324.

It is a cyclic number.

It is not a de Polignac number, because 4239447 - 2¹² = 4235351 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4239449) 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, 14947 + ... + 15227.

It is an arithmetic number, because the mean of its divisors is an integer number (365472).

Almost surely, 2^4239447 is an apocalyptic number.

4239447 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4239447 is a deficient number, since it is larger than the sum of its proper divisors (1608105).

4239447 is a wasteful number, since it uses less digits than its factorization.

4239447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

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

The square root of 4239447 is about 2058.9917435483. The cubic root of 4239447 is about 161.8464098322.

It can be divided in two parts, 423 and 9447, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 4239447 in words is "four million, two hundred thirty-nine thousand, four hundred forty-seven".