4050009409 has 2 divisors, whose sum is σ = 4050009410. Its totient is φ = 4050009408.

The previous prime is 4050009401. The next prime is 4050009437. The reversal of 4050009409 is 9049000504.

It is a happy number.

4050009409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3952888384 + 97121025 = 62872^2 + 9855^2 .

It is a cyclic number.

It is not a de Polignac number, because 4050009409 - 2³ = 4050009401 is a prime.

It is not a weakly prime, because it can be changed into another prime (4050009401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025004704 + 2025004705.

It is an arithmetic number, because the mean of its divisors is an integer number (2025004705).

Almost surely, 2^4050009409 is an apocalyptic number.

It is an amenable number.

4050009409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4050009409 is an equidigital number, since it uses as much as digits as its factorization.

4050009409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 4050009409 is about 63639.6842308319. The cubic root of 4050009409 is about 1593.9890881624.

The spelling of 4050009409 in words is "four billion, fifty million, nine thousand, four hundred nine".