369890009 has 2 divisors, whose sum is σ = 369890010. Its totient is φ = 369890008.

The previous prime is 369889997. The next prime is 369890033. The reversal of 369890009 is 900098963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261792400 + 108097609 = 16180^2 + 10397^2 .

It is a cyclic number.

It is not a de Polignac number, because 369890009 - 2²⁸ = 101454553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (369890509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184945004 + 184945005.

It is an arithmetic number, because the mean of its divisors is an integer number (184945005).

Almost surely, 2^369890009 is an apocalyptic number.

It is an amenable number.

369890009 is a deficient number, since it is larger than the sum of its proper divisors (1).

369890009 is an equidigital number, since it uses as much as digits as its factorization.

369890009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 369890009 is about 19232.5247692548. The cubic root of 369890009 is about 717.8342901955.

The spelling of 369890009 in words is "three hundred sixty-nine million, eight hundred ninety thousand, nine".