1184887 has 4 divisors (see below), whose sum is σ = 1292616. Its totient is φ = 1077160.

The previous prime is 1184881. The next prime is 1184893. The reversal of 1184887 is 7884811.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1184881) and next prime (1184893).

It is a cyclic number.

It is not a de Polignac number, because 1184887 - 2⁷ = 1184759 is a prime.

It is a Duffinian number.

1184887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1184881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53848 + ... + 53869.

It is an arithmetic number, because the mean of its divisors is an integer number (323154).

2^1184887 is an apocalyptic number.

1184887 is a deficient number, since it is larger than the sum of its proper divisors (107729).

1184887 is a wasteful number, since it uses less digits than its factorization.

1184887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107728.

The product of its digits is 14336, while the sum is 37.

The square root of 1184887 is about 1088.5251489975. The cubic root of 1184887 is about 105.8178609383.

It can be divided in two parts, 11848 and 87, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 1184887 in words is "one million, one hundred eighty-four thousand, eight hundred eighty-seven".