47639982 has 32 divisors (see below), whose sum is σ = 106152480. Its totient is φ = 14152320.

The previous prime is 47639981. The next prime is 47639987. The reversal of 47639982 is 28993674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47639981) 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 15 ways as a sum of consecutive naturals, for example, 8269 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (3317265).

Almost surely, 2^47639982 is an apocalyptic number.

47639982 is an abundant number, since it is smaller than the sum of its proper divisors (58512498).

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

47639982 is a wasteful number, since it uses less digits than its factorization.

47639982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21108.

The product of its digits is 653184, while the sum is 48.

The square root of 47639982 is about 6902.1722667578. The cubic root of 47639982 is about 362.5132317009.

The spelling of 47639982 in words is "forty-seven million, six hundred thirty-nine thousand, nine hundred eighty-two".