47889973 has 2 divisors, whose sum is σ = 47889974. Its totient is φ = 47889972.

The previous prime is 47889949. The next prime is 47889977. The reversal of 47889973 is 37998874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37662769 + 10227204 = 6137^2 + 3198^2 .

It is a cyclic number.

It is not a de Polignac number, because 47889973 - 2⁹ = 47889461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47889977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23944986 + 23944987.

It is an arithmetic number, because the mean of its divisors is an integer number (23944987).

Almost surely, 2^47889973 is an apocalyptic number.

It is an amenable number.

47889973 is a deficient number, since it is larger than the sum of its proper divisors (1).

47889973 is an equidigital number, since it uses as much as digits as its factorization.

47889973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 47889973 is about 6920.2581599244. The cubic root of 47889973 is about 363.1462223360.

The spelling of 47889973 in words is "forty-seven million, eight hundred eighty-nine thousand, nine hundred seventy-three".