3996839 has 8 divisors (see below), whose sum is σ = 4983168. Its totient is φ = 3114360.

The previous prime is 3996827. The next prime is 3996857. The reversal of 3996839 is 9386993.

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 3996839 - 2⁸ = 3996583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3996793 and 3996802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25877 + ... + 26030.

It is an arithmetic number, because the mean of its divisors is an integer number (622896).

Almost surely, 2^3996839 is an apocalyptic number.

3996839 is a deficient number, since it is larger than the sum of its proper divisors (986329).

3996839 is a wasteful number, since it uses less digits than its factorization.

3996839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51925.

The product of its digits is 314928, while the sum is 47.

The square root of 3996839 is about 1999.2095938145. The cubic root of 3996839 is about 158.6982793879.

The spelling of 3996839 in words is "three million, nine hundred ninety-six thousand, eight hundred thirty-nine".