47009447 has 8 divisors (see below), whose sum is σ = 50098176. Its totient is φ = 44007832.

The previous prime is 47009429. The next prime is 47009453. The reversal of 47009447 is 74490074.

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

It is not a de Polignac number, because 47009447 - 2²⁴ = 30232231 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 (47009407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20663 + ... + 22824.

It is an arithmetic number, because the mean of its divisors is an integer number (6262272).

Almost surely, 2^47009447 is an apocalyptic number.

47009447 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

47009447 is a deficient number, since it is larger than the sum of its proper divisors (3088729).

47009447 is a wasteful number, since it uses less digits than its factorization.

47009447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43557.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 47009447 is about 6856.3435590700. The cubic root of 47009447 is about 360.9067855288.

The spelling of 47009447 in words is "forty-seven million, nine thousand, four hundred forty-seven".