4239739 has 8 divisors (see below), whose sum is σ = 4881888. Its totient is φ = 3606720.

The previous prime is 4239737. The next prime is 4239743. The reversal of 4239739 is 9379324.

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

It is a cyclic number.

It is not a de Polignac number, because 4239739 - 2¹ = 4239737 is a prime.

It is a d-powerful number, because it can be written as 4 + 2²¹ + 3 + 9 + 7⁵ + 3¹³ + 9⁶ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4239698 and 4239707.

It is not an unprimeable number, because it can be changed into a prime (4239731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252 + ... + 3169.

It is an arithmetic number, because the mean of its divisors is an integer number (610236).

Almost surely, 2^4239739 is an apocalyptic number.

4239739 is a deficient number, since it is larger than the sum of its proper divisors (642149).

4239739 is a wasteful number, since it uses less digits than its factorization.

4239739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565.

The product of its digits is 40824, while the sum is 37.

The square root of 4239739 is about 2059.0626508195. The cubic root of 4239739 is about 161.8501255737.

It can be divided in two parts, 42397 and 39, that added together give a square (42436 = 206²).

The spelling of 4239739 in words is "four million, two hundred thirty-nine thousand, seven hundred thirty-nine".