1088542439 has 4 divisors (see below), whose sum is σ = 1099764624. Its totient is φ = 1077320256.

The previous prime is 1088542391. The next prime is 1088542451. The reversal of 1088542439 is 9342458801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1088542439 - 2²⁴ = 1071765223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1088542439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088544439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5610947 + ... + 5611140.

It is an arithmetic number, because the mean of its divisors is an integer number (274941156).

Almost surely, 2^1088542439 is an apocalyptic number.

1088542439 is a deficient number, since it is larger than the sum of its proper divisors (11222185).

1088542439 is an equidigital number, since it uses as much as digits as its factorization.

1088542439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222184.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 1088542439 is about 32993.0665291967. The cubic root of 1088542439 is about 1028.6835347542.

The spelling of 1088542439 in words is "one billion, eighty-eight million, five hundred forty-two thousand, four hundred thirty-nine".