9999995953 has 2 divisors, whose sum is σ = 9999995954. Its totient is φ = 9999995952.

The previous prime is 9999995911. The next prime is 9999995977. The reversal of 9999995953 is 3595999999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8771633649 + 1228362304 = 93657^2 + 35048^2 .

It is an emirp because it is prime and its reverse (3595999999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999995953 - 2¹³ = 9999987761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9999995953.

It is not a weakly prime, because it can be changed into another prime (9999995353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999997976 + 4999997977.

It is an arithmetic number, because the mean of its divisors is an integer number (4999997977).

Almost surely, 2^9999995953 is an apocalyptic number.

It is an amenable number.

9999995953 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999995953 is an equidigital number, since it uses as much as digits as its factorization.

9999995953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 358722675, while the sum is 76.

The square root of 9999995953 is about 99999.9797649980. The cubic root of 9999995953 is about 2154.4343993986.

The spelling of 9999995953 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred fifty-three".