47838457 has 8 divisors (see below), whose sum is σ = 48732992. Its totient is φ = 46947600.

The previous prime is 47838443. The next prime is 47838467. The reversal of 47838457 is 75483874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47838457 - 2¹¹ = 47836409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47838467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48988 + ... + 49954.

It is an arithmetic number, because the mean of its divisors is an integer number (6091624).

Almost surely, 2^47838457 is an apocalyptic number.

It is an amenable number.

47838457 is a deficient number, since it is larger than the sum of its proper divisors (894535).

47838457 is an equidigital number, since it uses as much as digits as its factorization.

47838457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839.

The product of its digits is 752640, while the sum is 46.

The square root of 47838457 is about 6916.5350429243. The cubic root of 47838457 is about 363.0159615756.

The spelling of 47838457 in words is "forty-seven million, eight hundred thirty-eight thousand, four hundred fifty-seven".