47237947 has 2 divisors, whose sum is σ = 47237948. Its totient is φ = 47237946.

The previous prime is 47237941. The next prime is 47237959. The reversal of 47237947 is 74973274.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47237947 is a prime.

It is not a weakly prime, because it can be changed into another prime (47237941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23618973 + 23618974.

It is an arithmetic number, because the mean of its divisors is an integer number (23618974).

Almost surely, 2^47237947 is an apocalyptic number.

47237947 is a deficient number, since it is larger than the sum of its proper divisors (1).

47237947 is an equidigital number, since it uses as much as digits as its factorization.

47237947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 47237947 is about 6872.9867597719. The cubic root of 47237947 is about 361.4905968589.

It can be divided in two parts, 47237 and 947, that added together give a palindrome (48184).

The spelling of 47237947 in words is "forty-seven million, two hundred thirty-seven thousand, nine hundred forty-seven".