47279423 has 4 divisors (see below), whose sum is σ = 47322648. Its totient is φ = 47236200.

The previous prime is 47279417. The next prime is 47279443. The reversal of 47279423 is 32497274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47279423 - 2¹⁸ = 47017279 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 (47279443) 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, 19928 + ... + 22173.

It is an arithmetic number, because the mean of its divisors is an integer number (11830662).

Almost surely, 2^47279423 is an apocalyptic number.

47279423 is a deficient number, since it is larger than the sum of its proper divisors (43225).

47279423 is a wasteful number, since it uses less digits than its factorization.

47279423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43224.

The product of its digits is 84672, while the sum is 38.

The square root of 47279423 is about 6876.0034176839. The cubic root of 47279423 is about 361.5963649188.

The spelling of 47279423 in words is "forty-seven million, two hundred seventy-nine thousand, four hundred twenty-three".