3980209 has 8 divisors (see below), whose sum is σ = 4106432. Its totient is φ = 3855600.

The previous prime is 3980203. The next prime is 3980231. The reversal of 3980209 is 9020893.

It is a happy number.

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 3980209 - 2¹⁷ = 3849137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3980203) 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, 6187 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (513304).

Almost surely, 2^3980209 is an apocalyptic number.

It is an amenable number.

3980209 is a deficient number, since it is larger than the sum of its proper divisors (126223).

3980209 is a wasteful number, since it uses less digits than its factorization.

3980209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 3980209 is about 1995.0461147552. The cubic root of 3980209 is about 158.4778701104.

The spelling of 3980209 in words is "three million, nine hundred eighty thousand, two hundred nine".