269879989 has 2 divisors, whose sum is σ = 269879990. Its totient is φ = 269879988.

The previous prime is 269879977. The next prime is 269880007. The reversal of 269879989 is 989978962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239166225 + 30713764 = 15465^2 + 5542^2 .

It is a cyclic number.

It is not a de Polignac number, because 269879989 - 2¹⁷ = 269748917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269879789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134939994 + 134939995.

It is an arithmetic number, because the mean of its divisors is an integer number (134939995).

Almost surely, 2^269879989 is an apocalyptic number.

It is an amenable number.

269879989 is a deficient number, since it is larger than the sum of its proper divisors (1).

269879989 is an equidigital number, since it uses as much as digits as its factorization.

269879989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 67.

The square root of 269879989 is about 16428.0245008339. The cubic root of 269879989 is about 646.2346313877.

The spelling of 269879989 in words is "two hundred sixty-nine million, eight hundred seventy-nine thousand, nine hundred eighty-nine".