269311979 has 2 divisors, whose sum is σ = 269311980. Its totient is φ = 269311978.

The previous prime is 269311969. The next prime is 269311981. The reversal of 269311979 is 979113962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 269311979 - 2¹⁶ = 269246443 is a prime.

Together with 269311981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (269311919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134655989 + 134655990.

It is an arithmetic number, because the mean of its divisors is an integer number (134655990).

Almost surely, 2^269311979 is an apocalyptic number.

269311979 is a deficient number, since it is larger than the sum of its proper divisors (1).

269311979 is an equidigital number, since it uses as much as digits as its factorization.

269311979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 47.

The square root of 269311979 is about 16410.7275585210. The cubic root of 269311979 is about 645.7809413908.

The spelling of 269311979 in words is "two hundred sixty-nine million, three hundred eleven thousand, nine hundred seventy-nine".