4240012409 has 2 divisors, whose sum is σ = 4240012410. Its totient is φ = 4240012408.

The previous prime is 4240012369. The next prime is 4240012429. The reversal of 4240012409 is 9042100424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4172772409 + 67240000 = 64597^2 + 8200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4240012409 is a prime.

It is not a weakly prime, because it can be changed into another prime (4240012429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120006204 + 2120006205.

It is an arithmetic number, because the mean of its divisors is an integer number (2120006205).

Almost surely, 2^4240012409 is an apocalyptic number.

It is an amenable number.

4240012409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240012409 is an equidigital number, since it uses as much as digits as its factorization.

4240012409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 4240012409 is about 65115.3776691804. The cubic root of 4240012409 is about 1618.5360458736.

The spelling of 4240012409 in words is "four billion, two hundred forty million, twelve thousand, four hundred nine".