669192941 has 2 divisors, whose sum is σ = 669192942. Its totient is φ = 669192940.

The previous prime is 669192929. The next prime is 669192949. The reversal of 669192941 is 149291966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668015716 + 1177225 = 25846^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 669192941 - 2¹⁰ = 669191917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669192949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334596470 + 334596471.

It is an arithmetic number, because the mean of its divisors is an integer number (334596471).

Almost surely, 2^669192941 is an apocalyptic number.

It is an amenable number.

669192941 is a deficient number, since it is larger than the sum of its proper divisors (1).

669192941 is an equidigital number, since it uses as much as digits as its factorization.

669192941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 669192941 is about 25868.7638088874. The cubic root of 669192941 is about 874.6825258051.

The spelling of 669192941 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, nine hundred forty-one".