3978584 has 8 divisors (see below), whose sum is σ = 7459860. Its totient is φ = 1989288.

The previous prime is 3978553. The next prime is 3978587. The reversal of 3978584 is 4858793.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248654 + ... + 248669.

Almost surely, 2^3978584 is an apocalyptic number.

It is an amenable number.

3978584 is a deficient number, since it is larger than the sum of its proper divisors (3481276).

3978584 is a wasteful number, since it uses less digits than its factorization.

3978584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497329 (or 497325 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 3978584 is about 1994.6388144223. The cubic root of 3978584 is about 158.4562999204.

The spelling of 3978584 in words is "three million, nine hundred seventy-eight thousand, five hundred eighty-four".