47889787 has 8 divisors (see below), whose sum is σ = 52299072. Its totient is φ = 43489800.

The previous prime is 47889781. The next prime is 47889811. The reversal of 47889787 is 78798874.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47889787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47889781) 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, 12712 + ... + 16042.

It is an arithmetic number, because the mean of its divisors is an integer number (6537384).

Almost surely, 2^47889787 is an apocalyptic number.

47889787 is a deficient number, since it is larger than the sum of its proper divisors (4409285).

47889787 is a wasteful number, since it uses less digits than its factorization.

47889787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649.

The product of its digits is 6322176, while the sum is 58.

The square root of 47889787 is about 6920.2447211063. The cubic root of 47889787 is about 363.1457521939.

The spelling of 47889787 in words is "forty-seven million, eight hundred eighty-nine thousand, seven hundred eighty-seven".