It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 3870.
3870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 3870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5148).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3870 is a wasteful number, since it uses less digits than its factorization.
3870 is an evil number, because the sum of its binary digits is even.
The square root of 3870 is about 62.2093240600. The cubic root of 3870 is about 15.7001446969.
The spelling of 3870 in words is "three thousand, eight hundred seventy".