47009279 has 4 divisors (see below), whose sum is σ = 47063520. Its totient is φ = 46955040.

The previous prime is 47009269. The next prime is 47009297. The reversal of 47009279 is 97290074.

It is a happy number.

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 47009279 - 2²⁴ = 30232063 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 (47009239) 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, 25799 + ... + 27560.

It is an arithmetic number, because the mean of its divisors is an integer number (11765880).

Almost surely, 2^47009279 is an apocalyptic number.

47009279 is a deficient number, since it is larger than the sum of its proper divisors (54241).

47009279 is an equidigital number, since it uses as much as digits as its factorization.

47009279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54240.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 47009279 is about 6856.3313076309. The cubic root of 47009279 is about 360.9063555981.

The spelling of 47009279 in words is "forty-seven million, nine thousand, two hundred seventy-nine".