3984739 has 8 divisors (see below), whose sum is σ = 4377600. Its totient is φ = 3597000.

The previous prime is 3984731. The next prime is 3984751. The reversal of 3984739 is 9374893.

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

It is not a de Polignac number, because 3984739 - 2³ = 3984731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3984695 and 3984704.

It is not an unprimeable number, because it can be changed into a prime (3984731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 2860.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^3984739 is an apocalyptic number.

3984739 is a deficient number, since it is larger than the sum of its proper divisors (392861).

3984739 is a wasteful number, since it uses less digits than its factorization.

3984739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its digits is 163296, while the sum is 43.

The square root of 3984739 is about 1996.1811040084. The cubic root of 3984739 is about 158.5379701845.

The spelling of 3984739 in words is "three million, nine hundred eighty-four thousand, seven hundred thirty-nine".