385674909 has 4 divisors (see below), whose sum is σ = 514233216. Its totient is φ = 257116604.

The previous prime is 385674893. The next prime is 385674923. The reversal of 385674909 is 909476583.

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 385674909 - 2⁴ = 385674893 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385674929) 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, 64279149 + ... + 64279154.

It is an arithmetic number, because the mean of its divisors is an integer number (128558304).

Almost surely, 2^385674909 is an apocalyptic number.

It is an amenable number.

385674909 is a deficient number, since it is larger than the sum of its proper divisors (128558307).

385674909 is a wasteful number, since it uses less digits than its factorization.

385674909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128558306.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 385674909 is about 19638.6076135759. The cubic root of 385674909 is about 727.9034792586.

The spelling of 385674909 in words is "three hundred eighty-five million, six hundred seventy-four thousand, nine hundred nine".