385362409 has 4 divisors (see below), whose sum is σ = 408030804. Its totient is φ = 362694016.

The previous prime is 385362407. The next prime is 385362433. The reversal of 385362409 is 904263583.

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 353552809 + 31809600 = 18803^2 + 5640^2 .

It is a cyclic number.

It is not a de Polignac number, because 385362409 - 2¹ = 385362407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385362407) 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, 11334172 + ... + 11334205.

It is an arithmetic number, because the mean of its divisors is an integer number (102007701).

Almost surely, 2^385362409 is an apocalyptic number.

It is an amenable number.

385362409 is a deficient number, since it is larger than the sum of its proper divisors (22668395).

385362409 is a wasteful number, since it uses less digits than its factorization.

385362409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22668394.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 385362409 is about 19630.6497345350. The cubic root of 385362409 is about 727.7068271934.

The spelling of 385362409 in words is "three hundred eighty-five million, three hundred sixty-two thousand, four hundred nine".