47857393 has 2 divisors, whose sum is σ = 47857394. Its totient is φ = 47857392.

The previous prime is 47857351. The next prime is 47857423. The reversal of 47857393 is 39375874.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 5438224 = 6513^2 + 2332^2 .

It is a cyclic number.

It is not a de Polignac number, because 47857393 - 2¹⁷ = 47726321 is a prime.

It is not a weakly prime, because it can be changed into another prime (47857343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23928696 + 23928697.

It is an arithmetic number, because the mean of its divisors is an integer number (23928697).

Almost surely, 2^47857393 is an apocalyptic number.

It is an amenable number.

47857393 is a deficient number, since it is larger than the sum of its proper divisors (1).

47857393 is an equidigital number, since it uses as much as digits as its factorization.

47857393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 47857393 is about 6917.9038010079. The cubic root of 47857393 is about 363.0638530551.

The spelling of 47857393 in words is "forty-seven million, eight hundred fifty-seven thousand, three hundred ninety-three".