774089669 has 2 divisors, whose sum is σ = 774089670. Its totient is φ = 774089668.

The previous prime is 774089653. The next prime is 774089677. The reversal of 774089669 is 966980477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648313444 + 125776225 = 25462^2 + 11215^2 .

It is a cyclic number.

It is not a de Polignac number, because 774089669 - 2⁴ = 774089653 is a prime.

It is a super-2 number, since 2×774089669² = 1198429631305059122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774089639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387044834 + 387044835.

It is an arithmetic number, because the mean of its divisors is an integer number (387044835).

Almost surely, 2^774089669 is an apocalyptic number.

It is an amenable number.

774089669 is a deficient number, since it is larger than the sum of its proper divisors (1).

774089669 is an equidigital number, since it uses as much as digits as its factorization.

774089669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The square root of 774089669 is about 27822.4669826383. The cubic root of 774089669 is about 918.1854866842.

The spelling of 774089669 in words is "seven hundred seventy-four million, eighty-nine thousand, six hundred sixty-nine".