3903890 has 8 divisors (see below), whose sum is σ = 7027020. Its totient is φ = 1561552.

The previous prime is 3903883. The next prime is 3903899. The reversal of 3903890 is 983093.

3903890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3236401 + 667489 = 1799^2 + 817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3903899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195185 + ... + 195204.

Almost surely, 2^3903890 is an apocalyptic number.

3903890 is a deficient number, since it is larger than the sum of its proper divisors (3123130).

3903890 is a wasteful number, since it uses less digits than its factorization.

3903890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390396.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3903890 is about 1975.8264093791. The cubic root of 3903890 is about 157.4584084349.

The spelling of 3903890 in words is "three million, nine hundred three thousand, eight hundred ninety".