36390689 has 4 divisors (see below), whose sum is σ = 36402756. Its totient is φ = 36378624.

The previous prime is 36390677. The next prime is 36390691. The reversal of 36390689 is 98609363.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7317025 + 29073664 = 2705^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 36390689 - 2¹² = 36386593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36390089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2897 + ... + 9009.

It is an arithmetic number, because the mean of its divisors is an integer number (9100689).

Almost surely, 2^36390689 is an apocalyptic number.

It is an amenable number.

36390689 is a deficient number, since it is larger than the sum of its proper divisors (12067).

36390689 is an equidigital number, since it uses as much as digits as its factorization.

36390689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12066.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 36390689 is about 6032.4695606360. The cubic root of 36390689 is about 331.3828988983.

The spelling of 36390689 in words is "thirty-six million, three hundred ninety thousand, six hundred eighty-nine".