47889109 has 2 divisors, whose sum is σ = 47889110. Its totient is φ = 47889108.

The previous prime is 47889103. The next prime is 47889173. The reversal of 47889109 is 90198874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39652209 + 8236900 = 6297^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 47889109 - 2⁵ = 47889077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47889103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23944554 + 23944555.

It is an arithmetic number, because the mean of its divisors is an integer number (23944555).

Almost surely, 2^47889109 is an apocalyptic number.

It is an amenable number.

47889109 is a deficient number, since it is larger than the sum of its proper divisors (1).

47889109 is an equidigital number, since it uses as much as digits as its factorization.

47889109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 47889109 is about 6920.1957342260. The cubic root of 47889109 is about 363.1440384396.

The spelling of 47889109 in words is "forty-seven million, eight hundred eighty-nine thousand, one hundred nine".