36390809 has 8 divisors (see below), whose sum is σ = 44788800. Its totient is φ = 28792656.

The previous prime is 36390799. The next prime is 36390841. The reversal of 36390809 is 90809363.

It is a happy number.

36390809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36390809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36390889) 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 in 7 ways as a sum of consecutive naturals, for example, 199859 + ... + 200040.

It is an arithmetic number, because the mean of its divisors is an integer number (5598600).

Almost surely, 2^36390809 is an apocalyptic number.

It is an amenable number.

36390809 is a deficient number, since it is larger than the sum of its proper divisors (8397991).

36390809 is a wasteful number, since it uses less digits than its factorization.

36390809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399919.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 36390809 is about 6032.4795068032. The cubic root of 36390809 is about 331.3832631481.

The spelling of 36390809 in words is "thirty-six million, three hundred ninety thousand, eight hundred nine".