361285009 has 4 divisors (see below), whose sum is σ = 361569204. Its totient is φ = 361000816.

The previous prime is 361285007. The next prime is 361285021. The reversal of 361285009 is 900582163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289510225 + 71774784 = 17015^2 + 8472^2 .

It is a cyclic number.

It is not a de Polignac number, because 361285009 - 2¹ = 361285007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361285007) 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, 140182 + ... + 142735.

It is an arithmetic number, because the mean of its divisors is an integer number (90392301).

Almost surely, 2^361285009 is an apocalyptic number.

It is an amenable number.

361285009 is a deficient number, since it is larger than the sum of its proper divisors (284195).

361285009 is a wasteful number, since it uses less digits than its factorization.

361285009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284194.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 361285009 is about 19007.4987570695. The cubic root of 361285009 is about 712.2240706043.

The spelling of 361285009 in words is "three hundred sixty-one million, two hundred eighty-five thousand, nine".