996409387 has 2 divisors, whose sum is σ = 996409388. Its totient is φ = 996409386.

The previous prime is 996409369. The next prime is 996409391. The reversal of 996409387 is 783904699.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996409387 is a prime.

It is not a weakly prime, because it can be changed into another prime (996409367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498204693 + 498204694.

It is an arithmetic number, because the mean of its divisors is an integer number (498204694).

Almost surely, 2^996409387 is an apocalyptic number.

996409387 is a deficient number, since it is larger than the sum of its proper divisors (1).

996409387 is an equidigital number, since it uses as much as digits as its factorization.

996409387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 996409387 is about 31565.9529715166. The cubic root of 996409387 is about 998.8016936354.

The spelling of 996409387 in words is "nine hundred ninety-six million, four hundred nine thousand, three hundred eighty-seven".