72383609 has 2 divisors, whose sum is σ = 72383610. Its totient is φ = 72383608.

The previous prime is 72383587. The next prime is 72383617. The reversal of 72383609 is 90638327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 23425600 = 6997^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 72383609 - 2¹⁶ = 72318073 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72383639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36191804 + 36191805.

It is an arithmetic number, because the mean of its divisors is an integer number (36191805).

Almost surely, 2^72383609 is an apocalyptic number.

It is an amenable number.

72383609 is a deficient number, since it is larger than the sum of its proper divisors (1).

72383609 is an equidigital number, since it uses as much as digits as its factorization.

72383609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 72383609 is about 8507.8557228011. The cubic root of 72383609 is about 416.7542886302.

The spelling of 72383609 in words is "seventy-two million, three hundred eighty-three thousand, six hundred nine".