3997284 has 12 divisors (see below), whose sum is σ = 9327024. Its totient is φ = 1332424.

The previous prime is 3997271. The next prime is 3997297. The reversal of 3997284 is 4827993.

It is an interprime number because it is at equal distance from previous prime (3997271) and next prime (3997297).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166542 + ... + 166565.

It is an arithmetic number, because the mean of its divisors is an integer number (777252).

Almost surely, 2^3997284 is an apocalyptic number.

It is an amenable number.

3997284 is an abundant number, since it is smaller than the sum of its proper divisors (5329740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3997284 is a wasteful number, since it uses less digits than its factorization.

3997284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333114 (or 333112 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 3997284 is about 1999.3208847006. The cubic root of 3997284 is about 158.7041688849.

The spelling of 3997284 in words is "three million, nine hundred ninety-seven thousand, two hundred eighty-four".