918434 has 16 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 412560.

The previous prime is 918433. The next prime is 918439. The reversal of 918434 is 434819.

It is a junction number, because it is equal to n+sod(n) for n = 918397 and 918406.

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 918434.

It is not an unprimeable number, because it can be changed into a prime (918431) 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, 2207 + ... + 2589.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2⁹¹⁸⁴³⁴ is an apocalyptic number.

918434 is a deficient number, since it is larger than the sum of its proper divisors (602206).

918434 is a wasteful number, since it uses less digits than its factorization.

918434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its digits is 3456, while the sum is 29.

The square root of 918434 is about 958.3496230500. The cubic root of 918434 is about 97.2036674371.

The spelling of 918434 in words is "nine hundred eighteen thousand, four hundred thirty-four".