99647369 has 2 divisors, whose sum is σ = 99647370. Its totient is φ = 99647368.

The previous prime is 99647363. The next prime is 99647399. The reversal of 99647369 is 96374699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78145600 + 21501769 = 8840^2 + 4637^2 .

It is an emirp because it is prime and its reverse (96374699) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99647369 is a prime.

It is a super-2 number, since 2×99647369² = 19859196297244322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99647369.

It is not a weakly prime, because it can be changed into another prime (99647363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49823684 + 49823685.

It is an arithmetic number, because the mean of its divisors is an integer number (49823685).

Almost surely, 2^99647369 is an apocalyptic number.

It is an amenable number.

99647369 is a deficient number, since it is larger than the sum of its proper divisors (1).

99647369 is an equidigital number, since it uses as much as digits as its factorization.

99647369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 53.

The square root of 99647369 is about 9982.3528789559. The cubic root of 99647369 is about 463.6126514255.

The spelling of 99647369 in words is "ninety-nine million, six hundred forty-seven thousand, three hundred sixty-nine".