47977587 has 24 divisors (see below), whose sum is σ = 83861856. Its totient is φ = 25802496.

The previous prime is 47977541. The next prime is 47977591. The reversal of 47977587 is 78577974.

47977587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47977587 - 2¹² = 47973491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47977087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21328 + ... + 23469.

It is an arithmetic number, because the mean of its divisors is an integer number (3494244).

Almost surely, 2^47977587 is an apocalyptic number.

47977587 is a deficient number, since it is larger than the sum of its proper divisors (35884269).

47977587 is a wasteful number, since it uses less digits than its factorization.

47977587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44827 (or 44824 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 54.

The square root of 47977587 is about 6926.5855224634. The cubic root of 47977587 is about 363.3675443102.

The spelling of 47977587 in words is "forty-seven million, nine hundred seventy-seven thousand, five hundred eighty-seven".