385462509 has 4 divisors (see below), whose sum is σ = 513950016. Its totient is φ = 256975004.

The previous prime is 385462507. The next prime is 385462513. The reversal of 385462509 is 905264583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 385462509 - 2¹ = 385462507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385462501) 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, 64243749 + ... + 64243754.

It is an arithmetic number, because the mean of its divisors is an integer number (128487504).

Almost surely, 2^385462509 is an apocalyptic number.

It is an amenable number.

385462509 is a deficient number, since it is larger than the sum of its proper divisors (128487507).

385462509 is a wasteful number, since it uses less digits than its factorization.

385462509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128487506.

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

The square root of 385462509 is about 19633.1991534747. The cubic root of 385462509 is about 727.7698303522.

The spelling of 385462509 in words is "three hundred eighty-five million, four hundred sixty-two thousand, five hundred nine".