269081993 has 2 divisors, whose sum is σ = 269081994. Its totient is φ = 269081992.

The previous prime is 269081957. The next prime is 269082013. The reversal of 269081993 is 399180962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262180864 + 6901129 = 16192^2 + 2627^2 .

It is a cyclic number.

It is not a de Polignac number, because 269081993 - 2⁸ = 269081737 is a prime.

It is not a weakly prime, because it can be changed into another prime (269081903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134540996 + 134540997.

It is an arithmetic number, because the mean of its divisors is an integer number (134540997).

Almost surely, 2^269081993 is an apocalyptic number.

It is an amenable number.

269081993 is a deficient number, since it is larger than the sum of its proper divisors (1).

269081993 is an equidigital number, since it uses as much as digits as its factorization.

269081993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 269081993 is about 16403.7188771327. The cubic root of 269081993 is about 645.5970618695.

The spelling of 269081993 in words is "two hundred sixty-nine million, eighty-one thousand, nine hundred ninety-three".