279456161 has 4 divisors (see below), whose sum is σ = 294164400. Its totient is φ = 264747924.

The previous prime is 279456139. The next prime is 279456179. The reversal of 279456161 is 161654972.

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 279456161 - 2¹⁴ = 279439777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279456131) 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, 7354091 + ... + 7354128.

It is an arithmetic number, because the mean of its divisors is an integer number (73541100).

Almost surely, 2^279456161 is an apocalyptic number.

It is an amenable number.

279456161 is a deficient number, since it is larger than the sum of its proper divisors (14708239).

279456161 is a wasteful number, since it uses less digits than its factorization.

279456161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14708238.

The product of its digits is 90720, while the sum is 41.

The square root of 279456161 is about 16716.9423340514. The cubic root of 279456161 is about 653.7894319411.

The spelling of 279456161 in words is "two hundred seventy-nine million, four hundred fifty-six thousand, one hundred sixty-one".