1163899 has 6 divisors (see below), whose sum is σ = 1279460. Its totient is φ = 1057980.

The previous prime is 1163891. The next prime is 1163923. The reversal of 1163899 is 9983611.

It is not a de Polignac number, because 1163899 - 2³ = 1163891 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163891) 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 5 ways as a sum of consecutive naturals, for example, 4689 + ... + 4930.

2^1163899 is an apocalyptic number.

1163899 is a deficient number, since it is larger than the sum of its proper divisors (115561).

1163899 is an equidigital number, since it uses as much as digits as its factorization.

1163899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9641 (or 9630 counting only the distinct ones).

The product of its digits is 11664, while the sum is 37.

The square root of 1163899 is about 1078.8415082856. The cubic root of 1163899 is about 105.1893484375.

The spelling of 1163899 in words is "one million, one hundred sixty-three thousand, eight hundred ninety-nine".