47939947 has 8 divisors (see below), whose sum is σ = 53574192. Its totient is φ = 42518400.

The previous prime is 47939923. The next prime is 47939963. The reversal of 47939947 is 74993974.

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

It is a cyclic number.

It is not a de Polignac number, because 47939947 - 2⁷ = 47939819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47939894 and 47939903.

It is not an unprimeable number, because it can be changed into a prime (47939977) 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, 52698 + ... + 53599.

It is an arithmetic number, because the mean of its divisors is an integer number (6696774).

Almost surely, 2^47939947 is an apocalyptic number.

47939947 is a deficient number, since it is larger than the sum of its proper divisors (5634245).

47939947 is a wasteful number, since it uses less digits than its factorization.

47939947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106349.

The product of its digits is 1714608, while the sum is 52.

The square root of 47939947 is about 6923.8679219061. The cubic root of 47939947 is about 363.2724948401.

The spelling of 47939947 in words is "forty-seven million, nine hundred thirty-nine thousand, nine hundred forty-seven".