4161940 has 24 divisors (see below), whose sum is σ = 9254952. Its totient is φ = 1566720.

The previous prime is 4161881. The next prime is 4161943. The reversal of 4161940 is 491614.

4161940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 467856 + 3694084 = 684^2 + 1922^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161943) 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, 5781 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (385623).

Almost surely, 2^4161940 is an apocalyptic number.

It is an amenable number.

4161940 is an abundant number, since it is smaller than the sum of its proper divisors (5093012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4161940 is a wasteful number, since it uses less digits than its factorization.

4161940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12267 (or 12265 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4161940 is about 2040.0833316313. The cubic root of 4161940 is about 160.8540271248.

The spelling of 4161940 in words is "four million, one hundred sixty-one thousand, nine hundred forty".