47009723 has 8 divisors (see below), whose sum is σ = 49142688. Its totient is φ = 44884224.

The previous prime is 47009719. The next prime is 47009747. The reversal of 47009723 is 32790074.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47009723 - 2² = 47009719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47009723.

It is not an unprimeable number, because it can be changed into a prime (47009923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13961 + ... + 16997.

It is an arithmetic number, because the mean of its divisors is an integer number (6142836).

Almost surely, 2^47009723 is an apocalyptic number.

47009723 is a deficient number, since it is larger than the sum of its proper divisors (2132965).

47009723 is a wasteful number, since it uses less digits than its factorization.

47009723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 47009723 is about 6856.3636863865. The cubic root of 47009723 is about 360.9074918413.

Adding to 47009723 its reverse (32790074), we get a palindrome (79799797).

The spelling of 47009723 in words is "forty-seven million, nine thousand, seven hundred twenty-three".