1085779 has 2 divisors, whose sum is σ = 1085780. Its totient is φ = 1085778.

The previous prime is 1085771. The next prime is 1085801. The reversal of 1085779 is 9775801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085779 - 2³ = 1085771 is a prime.

It is a Chen prime.

It is an Ulam number.

1085779 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1085771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542889 + 542890.

It is an arithmetic number, because the mean of its divisors is an integer number (542890).

2^1085779 is an apocalyptic number.

1085779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085779 is an equidigital number, since it uses as much as digits as its factorization.

1085779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1085779 is about 1042.0071976719. The cubic root of 1085779 is about 102.7812304551.

The spelling of 1085779 in words is "one million, eighty-five thousand, seven hundred seventy-nine".