1147869 has 6 divisors (see below), whose sum is σ = 1658046. Its totient is φ = 765240.

The previous prime is 1147843. The next prime is 1147889. The reversal of 1147869 is 9687411.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 45369 = 1050^2 + 213^2 .

It is not a de Polignac number, because 1147869 - 2⁸ = 1147613 is a prime.

It is a super-2 number, since 2×1147869² = 2635206482322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147819) 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, 63762 + ... + 63779.

It is an arithmetic number, because the mean of its divisors is an integer number (276341).

2^1147869 is an apocalyptic number.

It is an amenable number.

1147869 is a deficient number, since it is larger than the sum of its proper divisors (510177).

1147869 is a wasteful number, since it uses less digits than its factorization.

1147869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127547 (or 127544 counting only the distinct ones).

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

The square root of 1147869 is about 1071.3864848877. The cubic root of 1147869 is about 104.7042014937.

It can be divided in two parts, 1147 and 869, that added together give a triangular number (2016 = T₆₃).

The spelling of 1147869 in words is "one million, one hundred forty-seven thousand, eight hundred sixty-nine".