3949641 has 10 divisors (see below), whose sum is σ = 5900202. Its totient is φ = 2633040.

The previous prime is 3949619. The next prime is 3949643. The reversal of 3949641 is 1469493.

3949641 is a `hidden beast` number, since 3 + 9 + 4 + 9 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 29241 = 1980^2 + 171^2 .

It is not a de Polignac number, because 3949641 - 2⁵ = 3949609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3949596 and 3949605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949643) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24300 + ... + 24461.

Almost surely, 2^3949641 is an apocalyptic number.

It is an amenable number.

3949641 is a deficient number, since it is larger than the sum of its proper divisors (1950561).

3949641 is an equidigital number, since it uses as much as digits as its factorization.

3949641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48773 (or 48764 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3949641 is about 1987.3703731313. The cubic root of 3949641 is about 158.0711237765.

The spelling of 3949641 in words is "three million, nine hundred forty-nine thousand, six hundred forty-one".