47847621 has 8 divisors (see below), whose sum is σ = 64382560. Its totient is φ = 31605552.

The previous prime is 47847617. The next prime is 47847629. The reversal of 47847621 is 12674874.

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

It is not a de Polignac number, because 47847621 - 2² = 47847617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47847621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47847629) 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, 72835 + ... + 73488.

It is an arithmetic number, because the mean of its divisors is an integer number (8047820).

Almost surely, 2^47847621 is an apocalyptic number.

It is an amenable number.

47847621 is a deficient number, since it is larger than the sum of its proper divisors (16534939).

47847621 is a wasteful number, since it uses less digits than its factorization.

47847621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146435.

The product of its digits is 75264, while the sum is 39.

The square root of 47847621 is about 6917.1974816395. The cubic root of 47847621 is about 363.0391400397.

The spelling of 47847621 in words is "forty-seven million, eight hundred forty-seven thousand, six hundred twenty-one".