48447209 has 2 divisors, whose sum is σ = 48447210. Its totient is φ = 48447208.

The previous prime is 48447187. The next prime is 48447233. The reversal of 48447209 is 90274484.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31866025 + 16581184 = 5645^2 + 4072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48447209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (48447299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24223604 + 24223605.

It is an arithmetic number, because the mean of its divisors is an integer number (24223605).

Almost surely, 2^48447209 is an apocalyptic number.

It is an amenable number.

48447209 is a deficient number, since it is larger than the sum of its proper divisors (1).

48447209 is an equidigital number, since it uses as much as digits as its factorization.

48447209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 48447209 is about 6960.4029337388. The cubic root of 48447209 is about 364.5492879258.

The spelling of 48447209 in words is "forty-eight million, four hundred forty-seven thousand, two hundred nine".