269949991 has 2 divisors, whose sum is σ = 269949992. Its totient is φ = 269949990.

The previous prime is 269949961. The next prime is 269950013. The reversal of 269949991 is 199949962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 269949991 - 2¹¹ = 269947943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269949941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134974995 + 134974996.

It is an arithmetic number, because the mean of its divisors is an integer number (134974996).

Almost surely, 2^269949991 is an apocalyptic number.

269949991 is a deficient number, since it is larger than the sum of its proper divisors (1).

269949991 is an equidigital number, since it uses as much as digits as its factorization.

269949991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 58.

The square root of 269949991 is about 16430.1549292756. The cubic root of 269949991 is about 646.2905004255.

The spelling of 269949991 in words is "two hundred sixty-nine million, nine hundred forty-nine thousand, nine hundred ninety-one".