3981489 has 8 divisors (see below), whose sum is σ = 5328672. Its totient is φ = 2644320.

The previous prime is 3981479. The next prime is 3981491. The reversal of 3981489 is 9841893.

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

It is not a de Polignac number, because 3981489 - 2⁴ = 3981473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3981489.

It is not an unprimeable number, because it can be changed into a prime (3981449) 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, 1519 + ... + 3204.

It is an arithmetic number, because the mean of its divisors is an integer number (666084).

Almost surely, 2^3981489 is an apocalyptic number.

It is an amenable number.

3981489 is a deficient number, since it is larger than the sum of its proper divisors (1347183).

3981489 is a wasteful number, since it uses less digits than its factorization.

3981489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007.

The product of its digits is 62208, while the sum is 42.

The square root of 3981489 is about 1995.3668835580. The cubic root of 3981489 is about 158.4948566499.

It can be divided in two parts, 39814 and 89, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 3981489 in words is "three million, nine hundred eighty-one thousand, four hundred eighty-nine".