47997785 has 8 divisors (see below), whose sum is σ = 62833536. Its totient is φ = 34907440.

The previous prime is 47997751. The next prime is 47997787. The reversal of 47997785 is 58779974.

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

It is not a de Polignac number, because 47997785 - 2⁸ = 47997529 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 47997785.

It is not an unprimeable number, because it can be changed into a prime (47997787) 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, 436289 + ... + 436398.

It is an arithmetic number, because the mean of its divisors is an integer number (7854192).

Almost surely, 2^47997785 is an apocalyptic number.

It is an amenable number.

47997785 is a deficient number, since it is larger than the sum of its proper divisors (14835751).

47997785 is a wasteful number, since it uses less digits than its factorization.

47997785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872703.

The product of its digits is 4445280, while the sum is 56.

The square root of 47997785 is about 6928.0433745755. The cubic root of 47997785 is about 363.4185283108.

The spelling of 47997785 in words is "forty-seven million, nine hundred ninety-seven thousand, seven hundred eighty-five".