36440609 has 2 divisors, whose sum is σ = 36440610. Its totient is φ = 36440608.

The previous prime is 36440587. The next prime is 36440629. The reversal of 36440609 is 90604463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 10144225 = 5128^2 + 3185^2 .

It is an emirp because it is prime and its reverse (90604463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36440609 - 2²⁰ = 35392033 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 (36440629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18220304 + 18220305.

It is an arithmetic number, because the mean of its divisors is an integer number (18220305).

Almost surely, 2^36440609 is an apocalyptic number.

It is an amenable number.

36440609 is a deficient number, since it is larger than the sum of its proper divisors (1).

36440609 is an equidigital number, since it uses as much as digits as its factorization.

36440609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 36440609 is about 6036.6057515793. The cubic root of 36440609 is about 331.5343577489.

The spelling of 36440609 in words is "thirty-six million, four hundred forty thousand, six hundred nine".