3961849 has 4 divisors (see below), whose sum is σ = 4068964. Its totient is φ = 3854736.

The previous prime is 3961847. The next prime is 3961877. The reversal of 3961849 is 9481693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2424249 + 1537600 = 1557^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 3961849 - 2¹ = 3961847 is a prime.

3961849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3961847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53502 + ... + 53575.

It is an arithmetic number, because the mean of its divisors is an integer number (1017241).

Almost surely, 2^3961849 is an apocalyptic number.

It is an amenable number.

3961849 is a deficient number, since it is larger than the sum of its proper divisors (107115).

3961849 is a wasteful number, since it uses less digits than its factorization.

3961849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107114.

The product of its digits is 46656, while the sum is 40.

The square root of 3961849 is about 1990.4393987258. The cubic root of 3961849 is about 158.2338176748.

Subtracting from 3961849 its product of digits (46656), we obtain a palindrome (3915193).

The spelling of 3961849 in words is "three million, nine hundred sixty-one thousand, eight hundred forty-nine".