47497947 has 8 divisors (see below), whose sum is σ = 72377856. Its totient is φ = 27141672.

The previous prime is 47497939. The next prime is 47497951. The reversal of 47497947 is 74979474.

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

It is not a de Polignac number, because 47497947 - 2³ = 47497939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47497947.

It is not an unprimeable number, because it can be changed into a prime (47497907) 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, 1130883 + ... + 1130924.

It is an arithmetic number, because the mean of its divisors is an integer number (9047232).

Almost surely, 2^47497947 is an apocalyptic number.

47497947 is a deficient number, since it is larger than the sum of its proper divisors (24879909).

47497947 is a wasteful number, since it uses less digits than its factorization.

47497947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261817.

The product of its digits is 1778112, while the sum is 51.

The square root of 47497947 is about 6891.8754341616. The cubic root of 47497947 is about 362.1526044828.

The spelling of 47497947 in words is "forty-seven million, four hundred ninety-seven thousand, nine hundred forty-seven".