1081979 has 2 divisors, whose sum is σ = 1081980. Its totient is φ = 1081978.

The previous prime is 1081939. The next prime is 1081981. The reversal of 1081979 is 9791801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081979 - 2⁸ = 1081723 is a prime.

Together with 1081981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1081919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540989 + 540990.

It is an arithmetic number, because the mean of its divisors is an integer number (540990).

2^1081979 is an apocalyptic number.

1081979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081979 is an equidigital number, since it uses as much as digits as its factorization.

1081979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1081979 is about 1040.1821955792. The cubic root of 1081979 is about 102.6611860139.

The spelling of 1081979 in words is "one million, eighty-one thousand, nine hundred seventy-nine".