268479421 has 4 divisors (see below), whose sum is σ = 306833632. Its totient is φ = 230125212.

The previous prime is 268479403. The next prime is 268479427. The reversal of 268479421 is 124974862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268479421 - 2⁷ = 268479293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268479427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19177095 + ... + 19177108.

It is an arithmetic number, because the mean of its divisors is an integer number (76708408).

Almost surely, 2^268479421 is an apocalyptic number.

It is an amenable number.

268479421 is a deficient number, since it is larger than the sum of its proper divisors (38354211).

268479421 is an equidigital number, since it uses as much as digits as its factorization.

268479421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354210.

The product of its digits is 193536, while the sum is 43.

The square root of 268479421 is about 16385.3416503898. The cubic root of 268479421 is about 645.1147931816.

The spelling of 268479421 in words is "two hundred sixty-eight million, four hundred seventy-nine thousand, four hundred twenty-one".