47987167 has 4 divisors (see below), whose sum is σ = 48003336. Its totient is φ = 47971000.

The previous prime is 47987153. The next prime is 47987201. The reversal of 47987167 is 76178974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76178974 = 2 ⋅38089487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47987167 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 47987167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47987117) 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 3 ways as a sum of consecutive naturals, for example, 2209 + ... + 10042.

It is an arithmetic number, because the mean of its divisors is an integer number (12000834).

Almost surely, 2^47987167 is an apocalyptic number.

47987167 is a deficient number, since it is larger than the sum of its proper divisors (16169).

47987167 is a wasteful number, since it uses less digits than its factorization.

47987167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168.

The product of its digits is 592704, while the sum is 49.

The square root of 47987167 is about 6927.2770263647. The cubic root of 47987167 is about 363.3917280289.

The spelling of 47987167 in words is "forty-seven million, nine hundred eighty-seven thousand, one hundred sixty-seven".