90963569 has 2 divisors, whose sum is σ = 90963570. Its totient is φ = 90963568.

The previous prime is 90963557. The next prime is 90963581. The reversal of 90963569 is 96536909.

It is a balanced prime because it is at equal distance from previous prime (90963557) and next prime (90963581).

It can be written as a sum of positive squares in only one way, i.e., 90003169 + 960400 = 9487^2 + 980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90963569 is a prime.

It is a super-2 number, since 2×90963569² = 16548741770435522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90963599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45481784 + 45481785.

It is an arithmetic number, because the mean of its divisors is an integer number (45481785).

Almost surely, 2^90963569 is an apocalyptic number.

It is an amenable number.

90963569 is a deficient number, since it is larger than the sum of its proper divisors (1).

90963569 is an equidigital number, since it uses as much as digits as its factorization.

90963569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 90963569 is about 9537.4823197739. The cubic root of 90963569 is about 449.7341128877.

The spelling of 90963569 in words is "ninety million, nine hundred sixty-three thousand, five hundred sixty-nine".