1085451239 has 2 divisors, whose sum is σ = 1085451240. Its totient is φ = 1085451238.

The previous prime is 1085451223. The next prime is 1085451251. The reversal of 1085451239 is 9321545801.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9321545801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085451239 - 2⁴ = 1085451223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085451299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542725619 + 542725620.

It is an arithmetic number, because the mean of its divisors is an integer number (542725620).

Almost surely, 2^1085451239 is an apocalyptic number.

1085451239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085451239 is an equidigital number, since it uses as much as digits as its factorization.

1085451239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1085451239 is about 32946.1870176201. The cubic root of 1085451239 is about 1027.7088732232.

The spelling of 1085451239 in words is "one billion, eighty-five million, four hundred fifty-one thousand, two hundred thirty-nine".