996979 has 2 divisors, whose sum is σ = 996980. Its totient is φ = 996978.

The previous prime is 996973. The next prime is 997001. The reversal of 996979 is 979699.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 996979 - 2¹⁹ = 472691 is a prime.

It is not a weakly prime, because it can be changed into another prime (996973) 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, 498489 + 498490.

It is an arithmetic number, because the mean of its divisors is an integer number (498490).

2⁹⁹⁶⁹⁷⁹ is an apocalyptic number.

996979 is a deficient number, since it is larger than the sum of its proper divisors (1).

996979 is an equidigital number, since it uses as much as digits as its factorization.

996979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 49.

The square root of 996979 is about 998.4883574684. The cubic root of 996979 is about 99.8991984246.

The spelling of 996979 in words is "nine hundred ninety-six thousand, nine hundred seventy-nine".