1149867 has 6 divisors (see below), whose sum is σ = 1660932. Its totient is φ = 766572.

The previous prime is 1149859. The next prime is 1149881. The reversal of 1149867 is 7689411.

It is not a de Polignac number, because 1149867 - 2³ = 1149859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1149817) 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, 63873 + ... + 63890.

It is an arithmetic number, because the mean of its divisors is an integer number (276822).

2^1149867 is an apocalyptic number.

1149867 is a deficient number, since it is larger than the sum of its proper divisors (511065).

1149867 is a wasteful number, since it uses less digits than its factorization.

1149867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127769 (or 127766 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1149867 is about 1072.3185161136. The cubic root of 1149867 is about 104.7649162423.

It can be divided in two parts, 1149 and 867, that added together give a triangular number (2016 = T₆₃).

The spelling of 1149867 in words is "one million, one hundred forty-nine thousand, eight hundred sixty-seven".