268464389 has 2 divisors, whose sum is σ = 268464390. Its totient is φ = 268464388.

The previous prime is 268464367. The next prime is 268464401. The reversal of 268464389 is 983464862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173791489 + 94672900 = 13183^2 + 9730^2 .

It is a cyclic number.

It is not a de Polignac number, because 268464389 - 2¹² = 268460293 is a prime.

It is a super-2 number, since 2×268464389² = 144146256322286642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268464359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134232194 + 134232195.

It is an arithmetic number, because the mean of its divisors is an integer number (134232195).

Almost surely, 2^268464389 is an apocalyptic number.

It is an amenable number.

268464389 is a deficient number, since it is larger than the sum of its proper divisors (1).

268464389 is an equidigital number, since it uses as much as digits as its factorization.

268464389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 50.

The square root of 268464389 is about 16384.8829412968. The cubic root of 268464389 is about 645.1027530948.

The spelling of 268464389 in words is "two hundred sixty-eight million, four hundred sixty-four thousand, three hundred eighty-nine".