1089724439 has 2 divisors, whose sum is σ = 1089724440. Its totient is φ = 1089724438.

The previous prime is 1089724421. The next prime is 1089724477. The reversal of 1089724439 is 9344279801.

It is a weak prime.

It is an emirp because it is prime and its reverse (9344279801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1089724439 - 2¹² = 1089720343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1089724393 and 1089724402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089724409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544862219 + 544862220.

It is an arithmetic number, because the mean of its divisors is an integer number (544862220).

Almost surely, 2^1089724439 is an apocalyptic number.

1089724439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089724439 is an equidigital number, since it uses as much as digits as its factorization.

1089724439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 1089724439 is about 33010.9745236338. The cubic root of 1089724439 is about 1029.0557340245.

The spelling of 1089724439 in words is "one billion, eighty-nine million, seven hundred twenty-four thousand, four hundred thirty-nine".