3885990 has 16 divisors (see below), whose sum is σ = 9326448. Its totient is φ = 1036256.

The previous prime is 3885989. The next prime is 3885991. The reversal of 3885990 is 995883.

It is an interprime number because it is at equal distance from previous prime (3885989) and next prime (3885991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3885991) 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 7 ways as a sum of consecutive naturals, for example, 64737 + ... + 64796.

It is an arithmetic number, because the mean of its divisors is an integer number (582903).

Almost surely, 2^3885990 is an apocalyptic number.

3885990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3885990 is an abundant number, since it is smaller than the sum of its proper divisors (5440458).

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

3885990 is a wasteful number, since it uses less digits than its factorization.

3885990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129543.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 3885990 is about 1971.2914548590. The cubic root of 3885990 is about 157.2173818098.

The spelling of 3885990 in words is "three million, eight hundred eighty-five thousand, nine hundred ninety".