47697823 has 2 divisors, whose sum is σ = 47697824. Its totient is φ = 47697822.

The previous prime is 47697803. The next prime is 47697829. The reversal of 47697823 is 32879674.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47697823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47697829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23848911 + 23848912.

It is an arithmetic number, because the mean of its divisors is an integer number (23848912).

Almost surely, 2^47697823 is an apocalyptic number.

47697823 is a deficient number, since it is larger than the sum of its proper divisors (1).

47697823 is an equidigital number, since it uses as much as digits as its factorization.

47697823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 47697823 is about 6906.3610534058. The cubic root of 47697823 is about 362.6598847620.

The spelling of 47697823 in words is "forty-seven million, six hundred ninety-seven thousand, eight hundred twenty-three".