918940 has 24 divisors (see below), whose sum is σ = 2105712. Its totient is φ = 334080.

The previous prime is 918913. The next prime is 918943. The reversal of 918940 is 49819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918943) by changing a digit.

918940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (87738).

2⁹¹⁸⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

918940 is an abundant number, since it is smaller than the sum of its proper divisors (1186772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918940 is a wasteful number, since it uses less digits than its factorization.

918940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 918940 is about 958.6135822113. The cubic root of 918940 is about 97.2215152178.

It can be divided in two parts, 9189 and 40, that added together give a palindrome (9229).

The spelling of 918940 in words is "nine hundred eighteen thousand, nine hundred forty".