47247823 has 4 divisors (see below), whose sum is σ = 53997520. Its totient is φ = 40498128.

The previous prime is 47247803. The next prime is 47247839. The reversal of 47247823 is 32874274.

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 47247823 - 2⁹ = 47247311 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 (47247803) 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, 3374838 + ... + 3374851.

It is an arithmetic number, because the mean of its divisors is an integer number (13499380).

Almost surely, 2^47247823 is an apocalyptic number.

47247823 is a deficient number, since it is larger than the sum of its proper divisors (6749697).

47247823 is an equidigital number, since it uses as much as digits as its factorization.

47247823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749696.

The product of its digits is 75264, while the sum is 37.

The square root of 47247823 is about 6873.7051871607. The cubic root of 47247823 is about 361.5157872874.

The spelling of 47247823 in words is "forty-seven million, two hundred forty-seven thousand, eight hundred twenty-three".