47639484 has 18 divisors (see below), whose sum is σ = 120422120. Its totient is φ = 15879816.

The previous prime is 47639483. The next prime is 47639531. The reversal of 47639484 is 48493674.

47639484 is a `hidden beast` number, since 4 + 7 + 639 + 4 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47639483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661624 + ... + 661695.

Almost surely, 2^47639484 is an apocalyptic number.

It is an amenable number.

47639484 is an abundant number, since it is smaller than the sum of its proper divisors (72782636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47639484 is a wasteful number, since it uses less digits than its factorization.

47639484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323329 (or 1323324 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 47639484 is about 6902.1361910643. The cubic root of 47639484 is about 362.5119685307.

The spelling of 47639484 in words is "forty-seven million, six hundred thirty-nine thousand, four hundred eighty-four".