384625509 has 8 divisors (see below), whose sum is σ = 513389760. Its totient is φ = 256139136.

The previous prime is 384625499. The next prime is 384625511. The reversal of 384625509 is 905526483.

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

It is not a de Polignac number, because 384625509 - 2²³ = 376236901 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384625519) 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, 66217 + ... + 71790.

It is an arithmetic number, because the mean of its divisors is an integer number (64173720).

Almost surely, 2^384625509 is an apocalyptic number.

It is an amenable number.

384625509 is a deficient number, since it is larger than the sum of its proper divisors (128764251).

384625509 is a wasteful number, since it uses less digits than its factorization.

384625509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138939.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 384625509 is about 19611.8716342933. The cubic root of 384625509 is about 727.2426845919.

The spelling of 384625509 in words is "three hundred eighty-four million, six hundred twenty-five thousand, five hundred nine".