3984489 has 6 divisors (see below), whose sum is σ = 5755386. Its totient is φ = 2656320.

The previous prime is 3984479. The next prime is 3984499. The reversal of 3984489 is 9844893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3984479) and next prime (3984499).

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 1734489 = 1500^2 + 1317^2 .

It is not a de Polignac number, because 3984489 - 2⁴ = 3984473 is a prime.

It is a super-2 number, since 2×3984489² = 31752305182242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3984439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221352 + ... + 221369.

It is an arithmetic number, because the mean of its divisors is an integer number (959231).

Almost surely, 2^3984489 is an apocalyptic number.

It is an amenable number.

3984489 is a deficient number, since it is larger than the sum of its proper divisors (1770897).

3984489 is a wasteful number, since it uses less digits than its factorization.

3984489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442727 (or 442724 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3984489 is about 1996.1184834573. The cubic root of 3984489 is about 158.5346545912.

The spelling of 3984489 in words is "three million, nine hundred eighty-four thousand, four hundred eighty-nine".