769452221 has 2 divisors, whose sum is σ = 769452222. Its totient is φ = 769452220.

The previous prime is 769452169. The next prime is 769452227. The reversal of 769452221 is 122254967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 769452121 + 100 = 27739^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 769452221 - 2¹⁰ = 769451197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769452227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384726110 + 384726111.

It is an arithmetic number, because the mean of its divisors is an integer number (384726111).

Almost surely, 2^769452221 is an apocalyptic number.

It is an amenable number.

769452221 is a deficient number, since it is larger than the sum of its proper divisors (1).

769452221 is an equidigital number, since it uses as much as digits as its factorization.

769452221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 769452221 is about 27739.0018025163. The cubic root of 769452221 is about 916.3482452084.

The spelling of 769452221 in words is "seven hundred sixty-nine million, four hundred fifty-two thousand, two hundred twenty-one".