3913641 has 6 divisors (see below), whose sum is σ = 5653050. Its totient is φ = 2609088.

The previous prime is 3913633. The next prime is 3913667. The reversal of 3913641 is 1463193.

3913641 is a `hidden beast` number, since 3 + 9 + 13 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2903616 + 1010025 = 1704^2 + 1005^2 .

It is not a de Polignac number, because 3913641 - 2³ = 3913633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217416 + ... + 217433.

It is an arithmetic number, because the mean of its divisors is an integer number (942175).

Almost surely, 2^3913641 is an apocalyptic number.

It is an amenable number.

3913641 is a deficient number, since it is larger than the sum of its proper divisors (1739409).

3913641 is a wasteful number, since it uses less digits than its factorization.

3913641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434855 (or 434852 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 3913641 is about 1978.2924455196. The cubic root of 3913641 is about 157.5893974719.

It can be divided in two parts, 3913 and 641, that added together give a palindrome (4554).

The spelling of 3913641 in words is "three million, nine hundred thirteen thousand, six hundred forty-one".