3888890 has 16 divisors (see below), whose sum is σ = 7047432. Its totient is φ = 1545024.

The previous prime is 3888889. The next prime is 3888893. The reversal of 3888890 is 988883.

It can be written as a sum of positive squares in 4 ways, for example, as 2758921 + 1129969 = 1661^2 + 1063^2 .

It is not an unprimeable number, because it can be changed into a prime (3888893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 2808.

Almost surely, 2^3888890 is an apocalyptic number.

3888890 is a deficient number, since it is larger than the sum of its proper divisors (3158542).

3888890 is a wasteful number, since it uses less digits than its factorization.

3888890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 3888890 is about 1972.0268760846. The cubic root of 3888890 is about 157.2564809874.

The spelling of 3888890 in words is "three million, eight hundred eighty-eight thousand, eight hundred ninety".