47448109 has 2 divisors, whose sum is σ = 47448110. Its totient is φ = 47448108.

The previous prime is 47448101. The next prime is 47448131. The reversal of 47448109 is 90184474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31472100 + 15976009 = 5610^2 + 3997^2 .

It is a cyclic number.

It is not a de Polignac number, because 47448109 - 2³ = 47448101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47448101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23724054 + 23724055.

It is an arithmetic number, because the mean of its divisors is an integer number (23724055).

Almost surely, 2^47448109 is an apocalyptic number.

It is an amenable number.

47448109 is a deficient number, since it is larger than the sum of its proper divisors (1).

47448109 is an equidigital number, since it uses as much as digits as its factorization.

47448109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 47448109 is about 6888.2587785303. The cubic root of 47448109 is about 362.0258953017.

The spelling of 47448109 in words is "forty-seven million, four hundred forty-eight thousand, one hundred nine".