47868539 has 2 divisors, whose sum is σ = 47868540. Its totient is φ = 47868538.

The previous prime is 47868533. The next prime is 47868547. The reversal of 47868539 is 93586874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47868539 - 2⁴ = 47868523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (47868533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23934269 + 23934270.

It is an arithmetic number, because the mean of its divisors is an integer number (23934270).

Almost surely, 2^47868539 is an apocalyptic number.

47868539 is a deficient number, since it is larger than the sum of its proper divisors (1).

47868539 is an equidigital number, since it uses as much as digits as its factorization.

47868539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 47868539 is about 6918.7093449573. The cubic root of 47868539 is about 363.0920367577.

It can be divided in two parts, 47868 and 539, that multiplied together give a palindrome (25800852).

The spelling of 47868539 in words is "forty-seven million, eight hundred sixty-eight thousand, five hundred thirty-nine".