3987970 has 32 divisors (see below), whose sum is σ = 8563968. Its totient is φ = 1307328.

The previous prime is 3987943. The next prime is 3988003. The reversal of 3987970 is 797893.

3987970 = 161² + 162² + ... + 252².

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, 372 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (267624).

Almost surely, 2^3987970 is an apocalyptic number.

3987970 is an abundant number, since it is smaller than the sum of its proper divisors (4575998).

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

3987970 is a wasteful number, since it uses less digits than its factorization.

3987970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 3987970 is about 1996.9902353292. The cubic root of 3987970 is about 158.5808084395.

The spelling of 3987970 in words is "three million, nine hundred eighty-seven thousand, nine hundred seventy".