1147887 has 12 divisors (see below), whose sum is σ = 1785784. Its totient is φ = 706320.

The previous prime is 1147843. The next prime is 1147889. The reversal of 1147887 is 7887411.

It is not a de Polignac number, because 1147887 - 2⁷ = 1147759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4789 + ... + 5022.

2^1147887 is an apocalyptic number.

1147887 is a deficient number, since it is larger than the sum of its proper divisors (637897).

1147887 is a wasteful number, since it uses less digits than its factorization.

1147887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9830 (or 9827 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 1147887 is about 1071.3948851847. The cubic root of 1147887 is about 104.7047487878.

It can be divided in two parts, 114 and 7887, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 1147887 in words is "one million, one hundred forty-seven thousand, eight hundred eighty-seven".