47958809 has 2 divisors, whose sum is σ = 47958810. Its totient is φ = 47958808.

The previous prime is 47958787. The next prime is 47958857. The reversal of 47958809 is 90885974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 10259209 = 6140^2 + 3203^2 .

It is a cyclic number.

It is not a de Polignac number, because 47958809 - 2⁸ = 47958553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47958899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23979404 + 23979405.

It is an arithmetic number, because the mean of its divisors is an integer number (23979405).

Almost surely, 2^47958809 is an apocalyptic number.

It is an amenable number.

47958809 is a deficient number, since it is larger than the sum of its proper divisors (1).

47958809 is an equidigital number, since it uses as much as digits as its factorization.

47958809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 47958809 is about 6925.2298878810. The cubic root of 47958809 is about 363.3201318511.

The spelling of 47958809 in words is "forty-seven million, nine hundred fifty-eight thousand, eight hundred nine".