1086391899 has 16 divisors (see below), whose sum is σ = 1694179200. Its totient is φ = 686141928.

The previous prime is 1086391877. The next prime is 1086391927. The reversal of 1086391899 is 9981936801.

It is not a de Polignac number, because 1086391899 - 2¹² = 1086387803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1086391849) 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 in 15 ways as a sum of consecutive naturals, for example, 1058349 + ... + 1059374.

It is an arithmetic number, because the mean of its divisors is an integer number (105886200).

Almost surely, 2^1086391899 is an apocalyptic number.

1086391899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1086391899 is a deficient number, since it is larger than the sum of its proper divisors (607787301).

1086391899 is a wasteful number, since it uses less digits than its factorization.

1086391899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117751 (or 2117745 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 1086391899 is about 32960.4596296836. The cubic root of 1086391899 is about 1028.0056608544.

The spelling of 1086391899 in words is "one billion, eighty-six million, three hundred ninety-one thousand, eight hundred ninety-nine".