1020979 has 2 divisors, whose sum is σ = 1020980. Its totient is φ = 1020978.

The previous prime is 1020977. The next prime is 1020989. The reversal of 1020979 is 9790201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9790201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020979 - 2¹ = 1020977 is a prime.

Together with 1020977, it forms a pair of twin primes.

1020979 is a lucky number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1020973) 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, 510489 + 510490.

It is an arithmetic number, because the mean of its divisors is an integer number (510490).

2^1020979 is an apocalyptic number.

1020979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020979 is an equidigital number, since it uses as much as digits as its factorization.

1020979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1020979 is about 1010.4350548155. The cubic root of 1020979 is about 100.6944660054.

The spelling of 1020979 in words is "one million, twenty thousand, nine hundred seventy-nine".