47947843 has 2 divisors, whose sum is σ = 47947844. Its totient is φ = 47947842.

The previous prime is 47947829. The next prime is 47947853. The reversal of 47947843 is 34874974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47947843 - 2¹³ = 47939651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47947793 and 47947802.

It is not a weakly prime, because it can be changed into another prime (47947853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23973921 + 23973922.

It is an arithmetic number, because the mean of its divisors is an integer number (23973922).

Almost surely, 2^47947843 is an apocalyptic number.

47947843 is a deficient number, since it is larger than the sum of its proper divisors (1).

47947843 is an equidigital number, since it uses as much as digits as its factorization.

47947843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 46.

The square root of 47947843 is about 6924.4380999472. The cubic root of 47947843 is about 363.2924381396.

The spelling of 47947843 in words is "forty-seven million, nine hundred forty-seven thousand, eight hundred forty-three".