47978173 has 8 divisors (see below), whose sum is σ = 52133120. Its totient is φ = 43986240.

The previous prime is 47978171. The next prime is 47978191. The reversal of 47978173 is 37187974.

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

It is a cyclic number.

It is not a de Polignac number, because 47978173 - 2¹ = 47978171 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 (47978171) 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, 40140 + ... + 41317.

It is an arithmetic number, because the mean of its divisors is an integer number (6516640).

Almost surely, 2^47978173 is an apocalyptic number.

It is an amenable number.

47978173 is a deficient number, since it is larger than the sum of its proper divisors (4154947).

47978173 is a wasteful number, since it uses less digits than its factorization.

47978173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81507.

The product of its digits is 296352, while the sum is 46.

The square root of 47978173 is about 6926.6278231185. The cubic root of 47978173 is about 363.3690236990.

The spelling of 47978173 in words is "forty-seven million, nine hundred seventy-eight thousand, one hundred seventy-three".