335989 has 4 divisors (see below), whose sum is σ = 337324. Its totient is φ = 334656.

The previous prime is 335957. The next prime is 335999. The reversal of 335989 is 989533.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 195364 + 140625 = 442^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 335989 - 2⁵ = 335957 is a prime.

It is a super-2 number, since 2×335989² = 225777216242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (335999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 835.

It is an arithmetic number, because the mean of its divisors is an integer number (84331).

2³³⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

335989 is a deficient number, since it is larger than the sum of its proper divisors (1335).

335989 is an equidigital number, since it uses as much as digits as its factorization.

335989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334.

The product of its digits is 29160, while the sum is 37.

The square root of 335989 is about 579.6455813685. The cubic root of 335989 is about 69.5197742328.

The spelling of 335989 in words is "three hundred thirty-five thousand, nine hundred eighty-nine".