918304089 has 4 divisors (see below), whose sum is σ = 1224405456. Its totient is φ = 612202724.

The previous prime is 918304081. The next prime is 918304133. The reversal of 918304089 is 980403819.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 918304089 - 2³ = 918304081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 918304089.

It is not an unprimeable number, because it can be changed into a prime (918304081) 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 3 ways as a sum of consecutive naturals, for example, 153050679 + ... + 153050684.

It is an arithmetic number, because the mean of its divisors is an integer number (306101364).

Almost surely, 2^918304089 is an apocalyptic number.

It is an amenable number.

918304089 is a deficient number, since it is larger than the sum of its proper divisors (306101367).

918304089 is a wasteful number, since it uses less digits than its factorization.

918304089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306101366.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 918304089 is about 30303.5326158519. The cubic root of 918304089 is about 971.9908412065.

The spelling of 918304089 in words is "nine hundred eighteen million, three hundred four thousand, eighty-nine".