4119509 has 2 divisors, whose sum is σ = 4119510. Its totient is φ = 4119508.

The previous prime is 4119419. The next prime is 4119527. The reversal of 4119509 is 9059114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3912484 + 207025 = 1978^2 + 455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4119509 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4119569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2059754 + 2059755.

It is an arithmetic number, because the mean of its divisors is an integer number (2059755).

Almost surely, 2^4119509 is an apocalyptic number.

It is an amenable number.

4119509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4119509 is an equidigital number, since it uses as much as digits as its factorization.

4119509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 4119509 is about 2029.6573602458. The cubic root of 4119509 is about 160.3055229976.

The spelling of 4119509 in words is "four million, one hundred nineteen thousand, five hundred nine".