47790947 has 4 divisors (see below), whose sum is σ = 50306280. Its totient is φ = 45275616.

The previous prime is 47790923. The next prime is 47790959. The reversal of 47790947 is 74909774.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47790947 - 2¹⁰ = 47789923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47790917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257638 + ... + 1257675.

It is an arithmetic number, because the mean of its divisors is an integer number (12576570).

Almost surely, 2^47790947 is an apocalyptic number.

47790947 is a deficient number, since it is larger than the sum of its proper divisors (2515333).

47790947 is a wasteful number, since it uses less digits than its factorization.

47790947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515332.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 47790947 is about 6913.0996665750. The cubic root of 47790947 is about 362.8957472678.

The spelling of 47790947 in words is "forty-seven million, seven hundred ninety thousand, nine hundred forty-seven".