47797947 has 12 divisors (see below), whose sum is σ = 69726384. Its totient is φ = 31549200.

The previous prime is 47797927. The next prime is 47797951. The reversal of 47797947 is 74979774.

It is not a de Polignac number, because 47797947 - 2¹⁶ = 47732411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47797893 and 47797902.

It is not an unprimeable number, because it can be changed into a prime (47797927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25383 + ... + 27200.

It is an arithmetic number, because the mean of its divisors is an integer number (5810532).

Almost surely, 2^47797947 is an apocalyptic number.

47797947 is a deficient number, since it is larger than the sum of its proper divisors (21928437).

47797947 is a wasteful number, since it uses less digits than its factorization.

47797947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52690 (or 52687 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 54.

The square root of 47797947 is about 6913.6059332305. The cubic root of 47797947 is about 362.9134643347.

The spelling of 47797947 in words is "forty-seven million, seven hundred ninety-seven thousand, nine hundred forty-seven".