47784649 has 16 divisors (see below), whose sum is σ = 54063360. Its totient is φ = 41852160.

The previous prime is 47784647. The next prime is 47784661. The reversal of 47784649 is 94648774.

It is a cyclic number.

It is not a de Polignac number, because 47784649 - 2¹ = 47784647 is a prime.

It is a super-3 number, since 3×47784649³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47784647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45472 + ... + 46510.

It is an arithmetic number, because the mean of its divisors is an integer number (3378960).

Almost surely, 2^47784649 is an apocalyptic number.

It is an amenable number.

47784649 is a deficient number, since it is larger than the sum of its proper divisors (6278711).

47784649 is a wasteful number, since it uses less digits than its factorization.

47784649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 1354752, while the sum is 49.

The square root of 47784649 is about 6912.6441395460. The cubic root of 47784649 is about 362.8798054911.

The spelling of 47784649 in words is "forty-seven million, seven hundred eighty-four thousand, six hundred forty-nine".