4139744 has 24 divisors (see below), whose sum is σ = 9314928. Its totient is φ = 1774080.

The previous prime is 4139741. The next prime is 4139749. The reversal of 4139744 is 4479314.

It is a happy number.

4139744 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

4139744 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 4139744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9017 + ... + 9464.

It is an arithmetic number, because the mean of its divisors is an integer number (388122).

Almost surely, 2^4139744 is an apocalyptic number.

It is an amenable number.

4139744 is an abundant number, since it is smaller than the sum of its proper divisors (5175184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4139744 is a wasteful number, since it uses less digits than its factorization.

4139744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18498 (or 18490 counting only the distinct ones).

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

The square root of 4139744 is about 2034.6360853971. The cubic root of 4139744 is about 160.5675676214.

The spelling of 4139744 in words is "four million, one hundred thirty-nine thousand, seven hundred forty-four".