47997493 has 2 divisors, whose sum is σ = 47997494. Its totient is φ = 47997492.

The previous prime is 47997487. The next prime is 47997497. The reversal of 47997493 is 39479974.

47997493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 9284209 = 6222^2 + 3047^2 .

It is a cyclic number.

It is not a de Polignac number, because 47997493 - 2⁵ = 47997461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47997493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47997497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23998746 + 23998747.

It is an arithmetic number, because the mean of its divisors is an integer number (23998747).

Almost surely, 2^47997493 is an apocalyptic number.

It is an amenable number.

47997493 is a deficient number, since it is larger than the sum of its proper divisors (1).

47997493 is an equidigital number, since it uses as much as digits as its factorization.

47997493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 47997493 is about 6928.0223007724. The cubic root of 47997493 is about 363.4177913433.

The spelling of 47997493 in words is "forty-seven million, nine hundred ninety-seven thousand, four hundred ninety-three".