3980409 has 8 divisors (see below), whose sum is σ = 5316480. Its totient is φ = 2648976.

The previous prime is 3980407. The next prime is 3980419. The reversal of 3980409 is 9040893.

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

It is not a de Polignac number, because 3980409 - 2¹ = 3980407 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3980409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980401) 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, 2479 + ... + 3755.

It is an arithmetic number, because the mean of its divisors is an integer number (664560).

Almost surely, 2^3980409 is an apocalyptic number.

It is an amenable number.

3980409 is a deficient number, since it is larger than the sum of its proper divisors (1336071).

3980409 is a wasteful number, since it uses less digits than its factorization.

3980409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3980409 is about 1995.0962382802. The cubic root of 3980409 is about 158.4805244972.

The spelling of 3980409 in words is "three million, nine hundred eighty thousand, four hundred nine".