384445509 has 8 divisors (see below), whose sum is σ = 585821760. Its totient is φ = 219683136.

The previous prime is 384445469. The next prime is 384445591. The reversal of 384445509 is 905544483.

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

It is not a de Polignac number, because 384445509 - 2¹¹ = 384443461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384445409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9153444 + ... + 9153485.

It is an arithmetic number, because the mean of its divisors is an integer number (73227720).

Almost surely, 2^384445509 is an apocalyptic number.

It is an amenable number.

384445509 is a deficient number, since it is larger than the sum of its proper divisors (201376251).

384445509 is a wasteful number, since it uses less digits than its factorization.

384445509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18306939.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 384445509 is about 19607.2820400993. The cubic root of 384445509 is about 727.1292200175.

The spelling of 384445509 in words is "three hundred eighty-four million, four hundred forty-five thousand, five hundred nine".