47663447 has 4 divisors (see below), whose sum is σ = 51329880. Its totient is φ = 43997016.

The previous prime is 47663431. The next prime is 47663459. The reversal of 47663447 is 74436674.

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 47663447 - 2⁴ = 47663431 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 (47663467) 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, 1833197 + ... + 1833222.

It is an arithmetic number, because the mean of its divisors is an integer number (12832470).

Almost surely, 2^47663447 is an apocalyptic number.

47663447 is a deficient number, since it is larger than the sum of its proper divisors (3666433).

47663447 is a wasteful number, since it uses less digits than its factorization.

47663447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666432.

The product of its digits is 338688, while the sum is 41.

The square root of 47663447 is about 6903.8718846746. The cubic root of 47663447 is about 362.5727403770.

The spelling of 47663447 in words is "forty-seven million, six hundred sixty-three thousand, four hundred forty-seven".