48728909 has 2 divisors, whose sum is σ = 48728910. Its totient is φ = 48728908.

The previous prime is 48728893. The next prime is 48728941. The reversal of 48728909 is 90982784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48302500 + 426409 = 6950^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 48728909 - 2⁴ = 48728893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48728959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24364454 + 24364455.

It is an arithmetic number, because the mean of its divisors is an integer number (24364455).

Almost surely, 2^48728909 is an apocalyptic number.

It is an amenable number.

48728909 is a deficient number, since it is larger than the sum of its proper divisors (1).

48728909 is an equidigital number, since it uses as much as digits as its factorization.

48728909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 48728909 is about 6980.6095006095. The cubic root of 48728909 is about 365.2544894376.

The spelling of 48728909 in words is "forty-eight million, seven hundred twenty-eight thousand, nine hundred nine".