1154440559 has 4 divisors (see below), whose sum is σ = 1155499800. Its totient is φ = 1153381320.

The previous prime is 1154440543. The next prime is 1154440561. The reversal of 1154440559 is 9550444511.

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 1154440559 - 2⁴ = 1154440543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154440579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527984 + ... + 530165.

It is an arithmetic number, because the mean of its divisors is an integer number (288874950).

Almost surely, 2^1154440559 is an apocalyptic number.

1154440559 is a deficient number, since it is larger than the sum of its proper divisors (1059241).

1154440559 is a wasteful number, since it uses less digits than its factorization.

1154440559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059240.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 1154440559 is about 33977.0593047721. The cubic root of 1154440559 is about 1049.0363218645.

The spelling of 1154440559 in words is "one billion, one hundred fifty-four million, four hundred forty thousand, five hundred fifty-nine".