47971984 has 20 divisors (see below), whose sum is σ = 93101680. Its totient is φ = 23945760.

The previous prime is 47971981. The next prime is 47971993. The reversal of 47971984 is 48917974.

It is a super-2 number, since 2×47971984² = 4602622497792512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47971981) 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, 8887 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (4655084).

Almost surely, 2^47971984 is an apocalyptic number.

It is an amenable number.

47971984 is a deficient number, since it is larger than the sum of its proper divisors (45129696).

47971984 is a wasteful number, since it uses less digits than its factorization.

47971984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038 (or 5032 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 47971984 is about 6926.1810545206. The cubic root of 47971984 is about 363.3533986244.

The spelling of 47971984 in words is "forty-seven million, nine hundred seventy-one thousand, nine hundred eighty-four".