47138047 has 8 divisors (see below), whose sum is σ = 51650640. Its totient is φ = 42663360.

The previous prime is 47138009. The next prime is 47138057. The reversal of 47138047 is 74083174.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47138047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47138057) 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, 6838 + ... + 11875.

It is an arithmetic number, because the mean of its divisors is an integer number (6456330).

Almost surely, 2^47138047 is an apocalyptic number.

47138047 is a deficient number, since it is larger than the sum of its proper divisors (4512593).

47138047 is a wasteful number, since it uses less digits than its factorization.

47138047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18953.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 47138047 is about 6865.7153305391. The cubic root of 47138047 is about 361.2355872013.

The spelling of 47138047 in words is "forty-seven million, one hundred thirty-eight thousand, forty-seven".