3921173 has 2 divisors, whose sum is σ = 3921174. Its totient is φ = 3921172.

The previous prime is 3921161. The next prime is 3921179. The reversal of 3921173 is 3711293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3775249 + 145924 = 1943^2 + 382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3921173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3921179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960586 + 1960587.

It is an arithmetic number, because the mean of its divisors is an integer number (1960587).

Almost surely, 2^3921173 is an apocalyptic number.

It is an amenable number.

3921173 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921173 is an equidigital number, since it uses as much as digits as its factorization.

3921173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 3921173 is about 1980.1951923990. The cubic root of 3921173 is about 157.6904289408.

It can be divided in two parts, 39 and 21173, that added together give a palindrome (21212).

The spelling of 3921173 in words is "three million, nine hundred twenty-one thousand, one hundred seventy-three".