269891 has 2 divisors, whose sum is σ = 269892. Its totient is φ = 269890.

The previous prime is 269887. The next prime is 269897. The reversal of 269891 is 198962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 269891 - 2² = 269887 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (269897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134945 + 134946.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

2²⁶⁹⁸⁹¹ is an apocalyptic number.

269891 is a deficient number, since it is larger than the sum of its proper divisors (1).

269891 is an equidigital number, since it uses as much as digits as its factorization.

269891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 269891 is about 519.5103463840. The cubic root of 269891 is about 64.6243419976.

The spelling of 269891 in words is "two hundred sixty-nine thousand, eight hundred ninety-one".