1089869439 has 8 divisors (see below), whose sum is σ = 1538639280. Its totient is φ = 683839616.

The previous prime is 1089869437. The next prime is 1089869453. The reversal of 1089869439 is 9349689801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1089869439 - 2¹ = 1089869437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089869437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10684944 + ... + 10685045.

It is an arithmetic number, because the mean of its divisors is an integer number (192329910).

Almost surely, 2^1089869439 is an apocalyptic number.

1089869439 is a deficient number, since it is larger than the sum of its proper divisors (448769841).

1089869439 is a wasteful number, since it uses less digits than its factorization.

1089869439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21370009.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 1089869439 is about 33013.1706898928. The cubic root of 1089869439 is about 1029.1013744508.

The spelling of 1089869439 in words is "one billion, eighty-nine million, eight hundred sixty-nine thousand, four hundred thirty-nine".