918039 has 8 divisors (see below), whose sum is σ = 1236352. Its totient is φ = 605880.

The previous prime is 918019. The next prime is 918041. The reversal of 918039 is 930819.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 918039 - 2⁸ = 917783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 917997 and 918015.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918039.

It is not an unprimeable number, because it can be changed into a prime (918019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (154544).

2⁹¹⁸⁰³⁹ is an apocalyptic number.

918039 is a deficient number, since it is larger than the sum of its proper divisors (318313).

918039 is a wasteful number, since it uses less digits than its factorization.

918039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 918039 is about 958.1435174336. The cubic root of 918039 is about 97.1897303245.

The spelling of 918039 in words is "nine hundred eighteen thousand, thirty-nine".