47405647 has 8 divisors (see below), whose sum is σ = 48301344. Its totient is φ = 46518528.

The previous prime is 47405597. The next prime is 47405653. The reversal of 47405647 is 74650474.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47405647 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 (47405147) 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, 9603 + ... + 13675.

It is an arithmetic number, because the mean of its divisors is an integer number (6037668).

Almost surely, 2^47405647 is an apocalyptic number.

47405647 is a deficient number, since it is larger than the sum of its proper divisors (895697).

47405647 is a wasteful number, since it uses less digits than its factorization.

47405647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 47405647 is about 6885.1758873685. The cubic root of 47405647 is about 361.9178689980.

The spelling of 47405647 in words is "forty-seven million, four hundred five thousand, six hundred forty-seven".