1071979 has 2 divisors, whose sum is σ = 1071980. Its totient is φ = 1071978.

The previous prime is 1071977. The next prime is 1071991. The reversal of 1071979 is 9791701.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9791701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1071979 - 2¹ = 1071977 is a prime.

It is a super-2 number, since 2×1071979² = 2298277952882, which contains 22 as substring.

Together with 1071977, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1071977) 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, 535989 + 535990.

It is an arithmetic number, because the mean of its divisors is an integer number (535990).

2^1071979 is an apocalyptic number.

1071979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071979 is an equidigital number, since it uses as much as digits as its factorization.

1071979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 1071979 is about 1035.3641871342. The cubic root of 1071979 is about 102.3439306389.

The spelling of 1071979 in words is "one million, seventy-one thousand, nine hundred seventy-nine".