268309429 has 4 divisors (see below), whose sum is σ = 270966060. Its totient is φ = 265652800.

The previous prime is 268309423. The next prime is 268309439. The reversal of 268309429 is 924903862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 924903862 = 2 ⋅462451931.

It can be written as a sum of positive squares in 2 ways, for example, as 219099204 + 49210225 = 14802^2 + 7015^2 .

It is a cyclic number.

It is not a de Polignac number, because 268309429 - 2¹¹ = 268307381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268309423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328164 + ... + 1328365.

It is an arithmetic number, because the mean of its divisors is an integer number (67741515).

Almost surely, 2^268309429 is an apocalyptic number.

It is an amenable number.

268309429 is a deficient number, since it is larger than the sum of its proper divisors (2656631).

268309429 is a wasteful number, since it uses less digits than its factorization.

268309429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656630.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 268309429 is about 16380.1535096592. The cubic root of 268309429 is about 644.9786095504.

The spelling of 268309429 in words is "two hundred sixty-eight million, three hundred nine thousand, four hundred twenty-nine".