47785971 has 8 divisors (see below), whose sum is σ = 63747280. Its totient is φ = 31840992.

The previous prime is 47785961. The next prime is 47785993. The reversal of 47785971 is 17958774.

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

It is not a de Polignac number, because 47785971 - 2¹⁴ = 47769587 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 47785971.

It is not an unprimeable number, because it can be changed into a prime (47785961) 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, 7221 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (7968410).

Almost surely, 2^47785971 is an apocalyptic number.

47785971 is a deficient number, since it is larger than the sum of its proper divisors (15961309).

47785971 is a wasteful number, since it uses less digits than its factorization.

47785971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165.

The product of its digits is 493920, while the sum is 48.

The square root of 47785971 is about 6912.7397607606. The cubic root of 47785971 is about 362.8831519122.

The spelling of 47785971 in words is "forty-seven million, seven hundred eighty-five thousand, nine hundred seventy-one".