3980839 has 4 divisors (see below), whose sum is σ = 4215024. Its totient is φ = 3746656.

The previous prime is 3980831. The next prime is 3980843. The reversal of 3980839 is 9380893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3980839 - 2³ = 3980831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980831) 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, 117067 + ... + 117100.

It is an arithmetic number, because the mean of its divisors is an integer number (1053756).

Almost surely, 2^3980839 is an apocalyptic number.

3980839 is a deficient number, since it is larger than the sum of its proper divisors (234185).

3980839 is a wasteful number, since it uses less digits than its factorization.

3980839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234184.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 3980839 is about 1995.2039995950. The cubic root of 3980839 is about 158.4862311279.

The spelling of 3980839 in words is "three million, nine hundred eighty thousand, eight hundred thirty-nine".