3982139 has 4 divisors (see below), whose sum is σ = 4551024. Its totient is φ = 3413256.

The previous prime is 3982129. The next prime is 3982157. The reversal of 3982139 is 9312893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9312893 = 1637 ⋅5689.

It is not a de Polignac number, because 3982139 - 2⁴ = 3982123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3982099 and 3982108.

It is not an unprimeable number, because it can be changed into a prime (3982129) 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 3 ways as a sum of consecutive naturals, for example, 284432 + ... + 284445.

It is an arithmetic number, because the mean of its divisors is an integer number (1137756).

Almost surely, 2^3982139 is an apocalyptic number.

3982139 is a deficient number, since it is larger than the sum of its proper divisors (568885).

3982139 is an equidigital number, since it uses as much as digits as its factorization.

3982139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568884.

The product of its digits is 11664, while the sum is 35.

The square root of 3982139 is about 1995.5297542257. The cubic root of 3982139 is about 158.5034812333.

The spelling of 3982139 in words is "three million, nine hundred eighty-two thousand, one hundred thirty-nine".