279480338281 has 3 divisors (see below), whose sum is σ = 279480866941. Its totient is φ = 279479809622.

The previous prime is 279480338257. The next prime is 279480338299. The reversal of 279480338281 is 182833084972.

It is a happy number.

The square root of 279480338281 is 528659.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 279480338281 - 2¹⁹ = 279479813993 is a prime.

It is a super-2 number, since 2×279480338281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279480338581) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 264330 + ... + 792988.

Almost surely, 2^279480338281 is an apocalyptic number.

279480338281 is the 528659-th square number.

279480338281 is the 264330-th centered octagonal number.

It is an amenable number.

279480338281 is a deficient number, since it is larger than the sum of its proper divisors (528660).

279480338281 is an frugal number, since it uses more digits than its factorization.

279480338281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057318 (or 528659 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 279480338281 in words is "two hundred seventy-nine billion, four hundred eighty million, three hundred thirty-eight thousand, two hundred eighty-one".