47987885 has 16 divisors (see below), whose sum is σ = 62983872. Its totient is φ = 34809600.

The previous prime is 47987881. The next prime is 47987897. The reversal of 47987885 is 58878974.

It is not a de Polignac number, because 47987885 - 2² = 47987881 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 47987885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47987881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26117 + ... + 27893.

It is an arithmetic number, because the mean of its divisors is an integer number (3936492).

Almost surely, 2^47987885 is an apocalyptic number.

It is an amenable number.

47987885 is a deficient number, since it is larger than the sum of its proper divisors (14995987).

47987885 is a wasteful number, since it uses less digits than its factorization.

47987885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284.

The product of its digits is 4515840, while the sum is 56.

The square root of 47987885 is about 6927.3288502857. The cubic root of 47987885 is about 363.3935404159.

The spelling of 47987885 in words is "forty-seven million, nine hundred eighty-seven thousand, eight hundred eighty-five".