2169941 has 2 divisors, whose sum is σ = 2169942. Its totient is φ = 2169940.

The previous prime is 2169913. The next prime is 2169967. The reversal of 2169941 is 1499612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 23716 = 1465^2 + 154^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169941 - 2⁶ = 2169877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2169898 and 2169907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2169991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084970 + 1084971.

It is an arithmetic number, because the mean of its divisors is an integer number (1084971).

2^2169941 is an apocalyptic number.

It is an amenable number.

2169941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169941 is an equidigital number, since it uses as much as digits as its factorization.

2169941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 2169941 is about 1473.0719602246. The cubic root of 2169941 is about 129.4640856863.

The spelling of 2169941 in words is "two million, one hundred sixty-nine thousand, nine hundred forty-one".