99963569 has 2 divisors, whose sum is σ = 99963570. Its totient is φ = 99963568.

The previous prime is 99963533. The next prime is 99963581. The reversal of 99963569 is 96536999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94322944 + 5640625 = 9712^2 + 2375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99963569 is a prime.

It is a super-2 number, since 2×99963569² = 19985430254435522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99963509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49981784 + 49981785.

It is an arithmetic number, because the mean of its divisors is an integer number (49981785).

Almost surely, 2^99963569 is an apocalyptic number.

It is an amenable number.

99963569 is a deficient number, since it is larger than the sum of its proper divisors (1).

99963569 is an equidigital number, since it uses as much as digits as its factorization.

99963569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3542940, while the sum is 56.

The square root of 99963569 is about 9998.1782840676. The cubic root of 99963569 is about 464.1025106074.

The spelling of 99963569 in words is "ninety-nine million, nine hundred sixty-three thousand, five hundred sixty-nine".