3866408 has 64 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 1483776.

The previous prime is 3866399. The next prime is 3866419. The reversal of 3866408 is 8046683.

It is a super-2 number, since 2×3866408² = 29898221644928, 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 15 ways as a sum of consecutive naturals, for example, 34160 + ... + 34272.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

Almost surely, 2^3866408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3866408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596480).

3866408 is an abundant number, since it is smaller than the sum of its proper divisors (5326552).

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

3866408 is a wasteful number, since it uses less digits than its factorization.

3866408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 3866408 is about 1966.3183872405. The cubic root of 3866408 is about 156.9528574972.

The spelling of 3866408 in words is "three million, eight hundred sixty-six thousand, four hundred eight".