268409403 has 8 divisors (see below), whose sum is σ = 397643600. Its totient is φ = 178939584.

The previous prime is 268409381. The next prime is 268409423. The reversal of 268409403 is 304904862.

It is a happy number.

It is not a de Polignac number, because 268409403 - 2¹⁷ = 268278331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268409423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4970518 + ... + 4970571.

It is an arithmetic number, because the mean of its divisors is an integer number (49705450).

Almost surely, 2^268409403 is an apocalyptic number.

268409403 is a deficient number, since it is larger than the sum of its proper divisors (129234197).

268409403 is an equidigital number, since it uses as much as digits as its factorization.

268409403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9941098 (or 9941092 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 268409403 is about 16383.2049062447. The cubic root of 268409403 is about 645.0587074741.

The spelling of 268409403 in words is "two hundred sixty-eight million, four hundred nine thousand, four hundred three".