3940161 has 8 divisors (see below), whose sum is σ = 5264160. Its totient is φ = 2621472.

The previous prime is 3940159. The next prime is 3940171. The reversal of 3940161 is 1610493.

3940161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3940161 - 2¹ = 3940159 is a prime.

3940161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3940121) 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 7 ways as a sum of consecutive naturals, for example, 981 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (658020).

Almost surely, 2^3940161 is an apocalyptic number.

It is an amenable number.

3940161 is a deficient number, since it is larger than the sum of its proper divisors (1323999).

3940161 is a wasteful number, since it uses less digits than its factorization.

3940161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 3940161 is about 1984.9838790277. The cubic root of 3940161 is about 157.9445540642.

The spelling of 3940161 in words is "three million, nine hundred forty thousand, one hundred sixty-one".