1085449877 has 2 divisors, whose sum is σ = 1085449878. Its totient is φ = 1085449876.

The previous prime is 1085449861. The next prime is 1085449901. The reversal of 1085449877 is 7789445801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1052742916 + 32706961 = 32446^2 + 5719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085449877 - 2⁴ = 1085449861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085448877) 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, 542724938 + 542724939.

It is an arithmetic number, because the mean of its divisors is an integer number (542724939).

Almost surely, 2^1085449877 is an apocalyptic number.

It is an amenable number.

1085449877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085449877 is an equidigital number, since it uses as much as digits as its factorization.

1085449877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 1085449877 is about 32946.1663475434. The cubic root of 1085449877 is about 1027.7084433743.

The spelling of 1085449877 in words is "one billion, eighty-five million, four hundred forty-nine thousand, eight hundred seventy-seven".