47738945 has 8 divisors (see below), whose sum is σ = 57516480. Its totient is φ = 38038000.

The previous prime is 47738939. The next prime is 47738947. The reversal of 47738945 is 54983774.

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

It is not a de Polignac number, because 47738945 - 2⁶ = 47738881 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47738945.

It is not an unprimeable number, because it can be changed into a prime (47738947) 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, 17765 + ... + 20274.

It is an arithmetic number, because the mean of its divisors is an integer number (7189560).

Almost surely, 2^47738945 is an apocalyptic number.

It is an amenable number.

47738945 is a deficient number, since it is larger than the sum of its proper divisors (9777535).

47738945 is a wasteful number, since it uses less digits than its factorization.

47738945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38295.

The product of its digits is 846720, while the sum is 47.

The square root of 47738945 is about 6909.3375225126. The cubic root of 47738945 is about 362.7640755135.

The spelling of 47738945 in words is "forty-seven million, seven hundred thirty-eight thousand, nine hundred forty-five".