1089407439 has 18 divisors (see below), whose sum is σ = 1582123920. Its totient is φ = 722353296.

The previous prime is 1089407419. The next prime is 1089407441. The reversal of 1089407439 is 9347049801.

It is not a de Polignac number, because 1089407439 - 2¹¹ = 1089405391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1089407394 and 1089407403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089407419) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 347722 + ... + 350840.

Almost surely, 2^1089407439 is an apocalyptic number.

1089407439 is a deficient number, since it is larger than the sum of its proper divisors (492716481).

1089407439 is an equidigital number, since it uses as much as digits as its factorization.

1089407439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3319 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1089407439 is about 33006.1727408677. The cubic root of 1089407439 is about 1028.9559405071.

The spelling of 1089407439 in words is "one billion, eighty-nine million, four hundred seven thousand, four hundred thirty-nine".