383974609 has 4 divisors (see below), whose sum is σ = 384472116. Its totient is φ = 383477104.

The previous prime is 383974601. The next prime is 383974637. The reversal of 383974609 is 906479383.

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 46444225 + 337530384 = 6815^2 + 18372^2 .

It is a cyclic number.

It is not a de Polignac number, because 383974609 - 2³ = 383974601 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383974601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247594 + ... + 249139.

It is an arithmetic number, because the mean of its divisors is an integer number (96118029).

Almost surely, 2^383974609 is an apocalyptic number.

It is an amenable number.

383974609 is a deficient number, since it is larger than the sum of its proper divisors (497507).

383974609 is an equidigital number, since it uses as much as digits as its factorization.

383974609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497506.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 383974609 is about 19595.2700670340. The cubic root of 383974609 is about 726.8322164641.

The spelling of 383974609 in words is "three hundred eighty-three million, nine hundred seventy-four thousand, six hundred nine".