47886389 has 2 divisors, whose sum is σ = 47886390. Its totient is φ = 47886388.

The previous prime is 47886383. The next prime is 47886409. The reversal of 47886389 is 98368874.

It is a happy number.

47886389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45832900 + 2053489 = 6770^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 47886389 - 2¹² = 47882293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47886389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47886383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23943194 + 23943195.

It is an arithmetic number, because the mean of its divisors is an integer number (23943195).

Almost surely, 2^47886389 is an apocalyptic number.

It is an amenable number.

47886389 is a deficient number, since it is larger than the sum of its proper divisors (1).

47886389 is an equidigital number, since it uses as much as digits as its factorization.

47886389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 53.

The square root of 47886389 is about 6919.9992052023. Note that the first 3 decimals coincide. The cubic root of 47886389 is about 363.1371630386.

The spelling of 47886389 in words is "forty-seven million, eight hundred eighty-six thousand, three hundred eighty-nine".