47836639 has 2 divisors, whose sum is σ = 47836640. Its totient is φ = 47836638.

The previous prime is 47836609. The next prime is 47836643. The reversal of 47836639 is 93663874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47836639 - 2¹³ = 47828447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47836609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23918319 + 23918320.

It is an arithmetic number, because the mean of its divisors is an integer number (23918320).

Almost surely, 2^47836639 is an apocalyptic number.

47836639 is a deficient number, since it is larger than the sum of its proper divisors (1).

47836639 is an equidigital number, since it uses as much as digits as its factorization.

47836639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 46.

The square root of 47836639 is about 6916.4036174879. The cubic root of 47836639 is about 363.0113629645.

The spelling of 47836639 in words is "forty-seven million, eight hundred thirty-six thousand, six hundred thirty-nine".