99845953 has 2 divisors, whose sum is σ = 99845954. Its totient is φ = 99845952.

The previous prime is 99845939. The next prime is 99846031. The reversal of 99845953 is 35954899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92294449 + 7551504 = 9607^2 + 2748^2 .

It is an emirp because it is prime and its reverse (35954899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99845953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99845953.

It is not a weakly prime, because it can be changed into another prime (99845353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49922976 + 49922977.

It is an arithmetic number, because the mean of its divisors is an integer number (49922977).

Almost surely, 2^99845953 is an apocalyptic number.

It is an amenable number.

99845953 is a deficient number, since it is larger than the sum of its proper divisors (1).

99845953 is an equidigital number, since it uses as much as digits as its factorization.

99845953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 52.

The square root of 99845953 is about 9992.2946814033. The cubic root of 99845953 is about 463.9204199257.

The spelling of 99845953 in words is "ninety-nine million, eight hundred forty-five thousand, nine hundred fifty-three".