43048909 has 2 divisors, whose sum is σ = 43048910. Its totient is φ = 43048908.

The previous prime is 43048861. The next prime is 43048921. The reversal of 43048909 is 90984034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24472809 + 18576100 = 4947^2 + 4310^2 .

It is a cyclic number.

It is not a de Polignac number, because 43048909 - 2⁷ = 43048781 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 (43048969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21524454 + 21524455.

It is an arithmetic number, because the mean of its divisors is an integer number (21524455).

Almost surely, 2^43048909 is an apocalyptic number.

It is an amenable number.

43048909 is a deficient number, since it is larger than the sum of its proper divisors (1).

43048909 is an equidigital number, since it uses as much as digits as its factorization.

43048909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 43048909 is about 6561.1667407558. The cubic root of 43048909 is about 350.4725833814.

The spelling of 43048909 in words is "forty-three million, forty-eight thousand, nine hundred nine".