783140609 has 2 divisors, whose sum is σ = 783140610. Its totient is φ = 783140608.

The previous prime is 783140551. The next prime is 783140627. The reversal of 783140609 is 906041387.

783140609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738317584 + 44823025 = 27172^2 + 6695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-783140609 is a prime.

It is a super-2 number, since 2×783140609² = 1226618426929781762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (783140009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391570304 + 391570305.

It is an arithmetic number, because the mean of its divisors is an integer number (391570305).

Almost surely, 2^783140609 is an apocalyptic number.

It is an amenable number.

783140609 is a deficient number, since it is larger than the sum of its proper divisors (1).

783140609 is an equidigital number, since it uses as much as digits as its factorization.

783140609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 783140609 is about 27984.6495243374. The cubic root of 783140609 is about 921.7502162294.

The spelling of 783140609 in words is "seven hundred eighty-three million, one hundred forty thousand, six hundred nine".