969890569 has 2 divisors, whose sum is σ = 969890570. Its totient is φ = 969890568.

The previous prime is 969890563. The next prime is 969890591. The reversal of 969890569 is 965098969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 969699600 + 190969 = 31140^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 969890569 - 2²⁷ = 835672841 is a prime.

It is a super-2 number, since 2×969890569² = 1881375431670287522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (969890563) 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, 484945284 + 484945285.

It is an arithmetic number, because the mean of its divisors is an integer number (484945285).

Almost surely, 2^969890569 is an apocalyptic number.

It is an amenable number.

969890569 is a deficient number, since it is larger than the sum of its proper divisors (1).

969890569 is an equidigital number, since it uses as much as digits as its factorization.

969890569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9447840, while the sum is 61.

The square root of 969890569 is about 31143.0661464153. The cubic root of 969890569 is about 989.8610725706.

The spelling of 969890569 in words is "nine hundred sixty-nine million, eight hundred ninety thousand, five hundred sixty-nine".