9911953 has 2 divisors, whose sum is σ = 9911954. Its totient is φ = 9911952.

The previous prime is 9911929. The next prime is 9911959. The reversal of 9911953 is 3591199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9381969 + 529984 = 3063^2 + 728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9911953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955976 + 4955977.

It is an arithmetic number, because the mean of its divisors is an integer number (4955977).

Almost surely, 2^9911953 is an apocalyptic number.

It is an amenable number.

9911953 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911953 is an equidigital number, since it uses as much as digits as its factorization.

9911953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10935, while the sum is 37.

The square root of 9911953 is about 3148.3254279061. The cubic root of 9911953 is about 214.8092990829.

The spelling of 9911953 in words is "nine million, nine hundred eleven thousand, nine hundred fifty-three".