269487641 has 2 divisors, whose sum is σ = 269487642. Its totient is φ = 269487640.

The previous prime is 269487607. The next prime is 269487643. The reversal of 269487641 is 146784962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265820416 + 3667225 = 16304^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 269487641 - 2⁶ = 269487577 is a prime.

Together with 269487643, 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 (269487643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134743820 + 134743821.

It is an arithmetic number, because the mean of its divisors is an integer number (134743821).

Almost surely, 2^269487641 is an apocalyptic number.

It is an amenable number.

269487641 is a deficient number, since it is larger than the sum of its proper divisors (1).

269487641 is an equidigital number, since it uses as much as digits as its factorization.

269487641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 269487641 is about 16416.0787339730. The cubic root of 269487641 is about 645.9213170214.

The spelling of 269487641 in words is "two hundred sixty-nine million, four hundred eighty-seven thousand, six hundred forty-one".