3986290 has 64 divisors (see below), whose sum is σ = 9289728. Its totient is φ = 1195200.

The previous prime is 3986287. The next prime is 3986293. The reversal of 3986290 is 926893.

3986290 = 77² + 78² + ... + 231².

It is an interprime number because it is at equal distance from previous prime (3986287) and next prime (3986293).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23787 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (145152).

Almost surely, 2^3986290 is an apocalyptic number.

3986290 is an abundant number, since it is smaller than the sum of its proper divisors (5303438).

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

3986290 is a wasteful number, since it uses less digits than its factorization.

3986290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3986290 is about 1996.5695580170. The cubic root of 3986290 is about 158.5585370267.

The spelling of 3986290 in words is "three million, nine hundred eighty-six thousand, two hundred ninety".