918117 has 6 divisors (see below), whose sum is σ = 1326182. Its totient is φ = 612072.

The previous prime is 918109. The next prime is 918131. The reversal of 918117 is 711819.

It can be written as a sum of positive squares in only one way, i.e., 509796 + 408321 = 714^2 + 639^2 .

It is not a de Polignac number, because 918117 - 2³ = 918109 is a prime.

It is a Duffinian number.

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 918117.

It is not an unprimeable number, because it can be changed into a prime (918157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50998 + ... + 51015.

2⁹¹⁸¹¹⁷ is an apocalyptic number.

It is an amenable number.

918117 is a deficient number, since it is larger than the sum of its proper divisors (408065).

918117 is a wasteful number, since it uses less digits than its factorization.

918117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102019 (or 102016 counting only the distinct ones).

The product of its digits is 504, while the sum is 27.

The square root of 918117 is about 958.1842202833. The cubic root of 918117 is about 97.1924827799.

It can be divided in two parts, 918 and 117, that added together give a triangular number (1035 = T₄₅).

The spelling of 918117 in words is "nine hundred eighteen thousand, one hundred seventeen".