3948861 has 12 divisors (see below), whose sum is σ = 6124992. Its totient is φ = 2256408.

The previous prime is 3948859. The next prime is 3948881. The reversal of 3948861 is 1688493.

3948861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3948861 - 2¹ = 3948859 is a prime.

It is a Curzon number.

3948861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3948821) 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 11 ways as a sum of consecutive naturals, for example, 13285 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (510416).

Almost surely, 2^3948861 is an apocalyptic number.

It is an amenable number.

3948861 is a deficient number, since it is larger than the sum of its proper divisors (2176131).

3948861 is a wasteful number, since it uses less digits than its factorization.

3948861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26880 (or 26873 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 3948861 is about 1987.1741242277. The cubic root of 3948861 is about 158.0607174641.

The spelling of 3948861 in words is "three million, nine hundred forty-eight thousand, eight hundred sixty-one".