3986340 has 72 divisors (see below), whose sum is σ = 11706240. Its totient is φ = 1013376.

The previous prime is 3986329. The next prime is 3986351. The reversal of 3986340 is 436893.

It is an interprime number because it is at equal distance from previous prime (3986329) and next prime (3986351).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50421 + ... + 50499.

Almost surely, 2^3986340 is an apocalyptic number.

3986340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3986340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5853120).

3986340 is an abundant number, since it is smaller than the sum of its proper divisors (7719900).

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

3986340 is a wasteful number, since it uses less digits than its factorization.

3986340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3986340 is about 1996.5820794548. The cubic root of 3986340 is about 158.5591999567.

It can be divided in two parts, 39863 and 40, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 3986340 in words is "three million, nine hundred eighty-six thousand, three hundred forty".