538986 has 32 divisors (see below), whose sum is σ = 1266048. Its totient is φ = 149760.

The previous prime is 538943. The next prime is 538987. The reversal of 538986 is 689835.

It is not an unprimeable number, because it can be changed into a prime (538987) by changing a digit.

538986 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 15 ways as a sum of consecutive naturals, for example, 1566 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (39564).

2⁵³⁸⁹⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633024).

538986 is an abundant number, since it is smaller than the sum of its proper divisors (727062).

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

538986 is a wasteful number, since it uses less digits than its factorization.

538986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its digits is 51840, while the sum is 39.

The square root of 538986 is about 734.1566590313. The cubic root of 538986 is about 81.3815258298.

The spelling of 538986 in words is "five hundred thirty-eight thousand, nine hundred eighty-six".