47003987 has 8 divisors (see below), whose sum is σ = 47628000. Its totient is φ = 46384384.

The previous prime is 47003981. The next prime is 47003989. The reversal of 47003987 is 78930074.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47003987 - 2⁸ = 47003731 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 47003987.

It is not an unprimeable number, because it can be changed into a prime (47003981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23939 + ... + 25827.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^47003987 is an apocalyptic number.

47003987 is a deficient number, since it is larger than the sum of its proper divisors (624013).

47003987 is a wasteful number, since it uses less digits than its factorization.

47003987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 47003987 is about 6855.9453760951. The cubic root of 47003987 is about 360.8928122570.

The spelling of 47003987 in words is "forty-seven million, three thousand, nine hundred eighty-seven".