9995831 has 2 divisors, whose sum is σ = 9995832. Its totient is φ = 9995830.

The previous prime is 9995827. The next prime is 9995837. The reversal of 9995831 is 1385999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9995831 - 2² = 9995827 is a prime.

It is a super-2 number, since 2×9995831² = 199833274761122, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9995837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997915 + 4997916.

It is an arithmetic number, because the mean of its divisors is an integer number (4997916).

Almost surely, 2^9995831 is an apocalyptic number.

9995831 is a deficient number, since it is larger than the sum of its proper divisors (1).

9995831 is an equidigital number, since it uses as much as digits as its factorization.

9995831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 9995831 is about 3161.6184146731. The cubic root of 9995831 is about 215.4135253809.

The spelling of 9995831 in words is "nine million, nine hundred ninety-five thousand, eight hundred thirty-one".