772269989 has 2 divisors, whose sum is σ = 772269990. Its totient is φ = 772269988.

The previous prime is 772269983. The next prime is 772269997. The reversal of 772269989 is 989962277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530933764 + 241336225 = 23042^2 + 15535^2 .

It is a cyclic number.

It is not a de Polignac number, because 772269989 - 2²⁰ = 771221413 is a prime.

It is a Sophie Germain 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 (772269983) 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, 386134994 + 386134995.

It is an arithmetic number, because the mean of its divisors is an integer number (386134995).

Almost surely, 2^772269989 is an apocalyptic number.

It is an amenable number.

772269989 is a deficient number, since it is larger than the sum of its proper divisors (1).

772269989 is an equidigital number, since it uses as much as digits as its factorization.

772269989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 59.

The square root of 772269989 is about 27789.7461125502. The cubic root of 772269989 is about 917.4654518047.

The spelling of 772269989 in words is "seven hundred seventy-two million, two hundred sixty-nine thousand, nine hundred eighty-nine".