3900947 has 16 divisors (see below), whose sum is σ = 4377600. Its totient is φ = 3460320.

The previous prime is 3900943. The next prime is 3900989. The reversal of 3900947 is 7490093.

It is a happy number.

3900947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3900947 - 2² = 3900943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3900943) 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 15 ways as a sum of consecutive naturals, for example, 21704 + ... + 21882.

It is an arithmetic number, because the mean of its divisors is an integer number (273600).

Almost surely, 2^3900947 is an apocalyptic number.

3900947 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3900947 is a deficient number, since it is larger than the sum of its proper divisors (476653).

3900947 is a wasteful number, since it uses less digits than its factorization.

3900947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 3900947 is about 1975.0815173050. The cubic root of 3900947 is about 157.4188311080.

The spelling of 3900947 in words is "three million, nine hundred thousand, nine hundred forty-seven".