773998969 has 2 divisors, whose sum is σ = 773998970. Its totient is φ = 773998968.

The previous prime is 773998931. The next prime is 773999003. The reversal of 773998969 is 969899377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591073344 + 182925625 = 24312^2 + 13525^2 .

It is a cyclic number.

It is not a de Polignac number, because 773998969 - 2²¹ = 771901817 is a prime.

It is a super-2 number, since 2×773998969² = 1198148808026125922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (773998919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386999484 + 386999485.

It is an arithmetic number, because the mean of its divisors is an integer number (386999485).

Almost surely, 2^773998969 is an apocalyptic number.

It is an amenable number.

773998969 is a deficient number, since it is larger than the sum of its proper divisors (1).

773998969 is an equidigital number, since it uses as much as digits as its factorization.

773998969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46294416, while the sum is 67.

The square root of 773998969 is about 27820.8369572161. The cubic root of 773998969 is about 918.1496240532.

It can be divided in two parts, 77399 and 8969, that added together give a palindrome (86368).

The spelling of 773998969 in words is "seven hundred seventy-three million, nine hundred ninety-eight thousand, nine hundred sixty-nine".