996401839 has 2 divisors, whose sum is σ = 996401840. Its totient is φ = 996401838.

The previous prime is 996401827. The next prime is 996401863. The reversal of 996401839 is 938104699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 996401839 - 2⁷ = 996401711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 996401792 and 996401801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996401339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498200919 + 498200920.

It is an arithmetic number, because the mean of its divisors is an integer number (498200920).

Almost surely, 2^996401839 is an apocalyptic number.

996401839 is a deficient number, since it is larger than the sum of its proper divisors (1).

996401839 is an equidigital number, since it uses as much as digits as its factorization.

996401839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 996401839 is about 31565.8334120929. The cubic root of 996401839 is about 998.7991715883.

The spelling of 996401839 in words is "nine hundred ninety-six million, four hundred one thousand, eight hundred thirty-nine".