994955631139 has 2 divisors, whose sum is σ = 994955631140. Its totient is φ = 994955631138.

The previous prime is 994955631077. The next prime is 994955631167. The reversal of 994955631139 is 931136559499.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 994955631139 - 2¹¹ = 994955629091 is a prime.

It is not a weakly prime, because it can be changed into another prime (994955631199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497477815569 + 497477815570.

It is an arithmetic number, because the mean of its divisors is an integer number (497477815570).

Almost surely, 2^994955631139 is an apocalyptic number.

994955631139 is a deficient number, since it is larger than the sum of its proper divisors (1).

994955631139 is an equidigital number, since it uses as much as digits as its factorization.

994955631139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35429400, while the sum is 64.

The spelling of 994955631139 in words is "nine hundred ninety-four billion, nine hundred fifty-five million, six hundred thirty-one thousand, one hundred thirty-nine".