267989 has 4 divisors (see below), whose sum is σ = 277260. Its totient is φ = 258720.

The previous prime is 267961. The next prime is 268003. The reversal of 267989 is 989762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 47089 = 470^2 + 217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-267989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (267929) 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, 4592 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (69315).

2²⁶⁷⁹⁸⁹ is an apocalyptic number.

267989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

267989 is a deficient number, since it is larger than the sum of its proper divisors (9271).

267989 is an equidigital number, since it uses as much as digits as its factorization.

267989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9270.

The product of its digits is 54432, while the sum is 41.

The square root of 267989 is about 517.6765399359. The cubic root of 267989 is about 64.4721751665.

The spelling of 267989 in words is "two hundred sixty-seven thousand, nine hundred eighty-nine".