47281279 has 4 divisors (see below), whose sum is σ = 47295280. Its totient is φ = 47267280.

The previous prime is 47281259. The next prime is 47281309. The reversal of 47281279 is 97218274.

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 a cyclic number.

It is not a de Polignac number, because 47281279 - 2⁹ = 47280767 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 (47281219) 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, 1534 + ... + 9844.

It is an arithmetic number, because the mean of its divisors is an integer number (11823820).

Almost surely, 2^47281279 is an apocalyptic number.

47281279 is a deficient number, since it is larger than the sum of its proper divisors (14001).

47281279 is an equidigital number, since it uses as much as digits as its factorization.

47281279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14000.

The product of its digits is 56448, while the sum is 40.

The square root of 47281279 is about 6876.1383784796. The cubic root of 47281279 is about 361.6010964632.

The spelling of 47281279 in words is "forty-seven million, two hundred eighty-one thousand, two hundred seventy-nine".