1149863 has 24 divisors (see below), whose sum is σ = 1474704. Its totient is φ = 887040.

The previous prime is 1149859. The next prime is 1149881. The reversal of 1149863 is 3689411.

It is a happy number.

It is not a de Polignac number, because 1149863 - 2² = 1149859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149803) 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 23 ways as a sum of consecutive naturals, for example, 26720 + ... + 26762.

It is an arithmetic number, because the mean of its divisors is an integer number (61446).

2^1149863 is an apocalyptic number.

1149863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1149863 is a deficient number, since it is larger than the sum of its proper divisors (324841).

1149863 is a wasteful number, since it uses less digits than its factorization.

1149863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 84 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 1149863 is about 1072.3166509945. The cubic root of 1149863 is about 104.7647947615.

The spelling of 1149863 in words is "one million, one hundred forty-nine thousand, eight hundred sixty-three".