3897784 has 16 divisors (see below), whose sum is σ = 7972920. Its totient is φ = 1771680.

The previous prime is 3897749. The next prime is 3897797. The reversal of 3897784 is 4877983.

It is a super-2 number, since 2×3897784² = 30385440221312, which contains 22 as substring.

It is a congruent number.

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, 22059 + ... + 22234.

Almost surely, 2^3897784 is an apocalyptic number.

It is an amenable number.

3897784 is an abundant number, since it is smaller than the sum of its proper divisors (4075136).

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

3897784 is a wasteful number, since it uses less digits than its factorization.

3897784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44310 (or 44306 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 3897784 is about 1974.2806284822. The cubic root of 3897784 is about 157.3762730319.

The spelling of 3897784 in words is "three million, eight hundred ninety-seven thousand, seven hundred eighty-four".