47643976 has 8 divisors (see below), whose sum is σ = 89332470. Its totient is φ = 23821984.

The previous prime is 47643943. The next prime is 47643977. The reversal of 47643976 is 67934674.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 1267876 = 6810^2 + 1126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (47643977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2977741 + ... + 2977756.

Almost surely, 2^47643976 is an apocalyptic number.

47643976 is the 4366-th centered pentagonal number.

It is an amenable number.

47643976 is a deficient number, since it is larger than the sum of its proper divisors (41688494).

47643976 is a wasteful number, since it uses less digits than its factorization.

47643976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955503 (or 5955499 counting only the distinct ones).

The product of its digits is 762048, while the sum is 46.

The square root of 47643976 is about 6902.4615898968. The cubic root of 47643976 is about 362.5233621091.

The spelling of 47643976 in words is "forty-seven million, six hundred forty-three thousand, nine hundred seventy-six".