3987090 has 32 divisors (see below), whose sum is σ = 10632960. Its totient is φ = 1063152.

The previous prime is 3987079. The next prime is 3987107. The reversal of 3987090 is 907893.

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, 7114 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (332280).

Almost surely, 2^3987090 is an apocalyptic number.

3987090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3987090 is an abundant number, since it is smaller than the sum of its proper divisors (6645870).

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

3987090 is a wasteful number, since it uses less digits than its factorization.

3987090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14783 (or 14777 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 3987090 is about 1996.7698915999. The cubic root of 3987090 is about 158.5691432416.

The spelling of 3987090 in words is "three million, nine hundred eighty-seven thousand, ninety".