36109609 has 4 divisors (see below), whose sum is σ = 37679616. Its totient is φ = 34539604.

The previous prime is 36109603. The next prime is 36109627. The reversal of 36109609 is 90690163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36109609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36109603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784969 + ... + 785014.

It is an arithmetic number, because the mean of its divisors is an integer number (9419904).

Almost surely, 2^36109609 is an apocalyptic number.

It is an amenable number.

36109609 is a deficient number, since it is larger than the sum of its proper divisors (1570007).

36109609 is a wasteful number, since it uses less digits than its factorization.

36109609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570006.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 36109609 is about 6009.1271412743. The cubic root of 36109609 is about 330.5274973441.

The spelling of 36109609 in words is "thirty-six million, one hundred nine thousand, six hundred nine".