389204409 has 32 divisors (see below), whose sum is σ = 605439360. Its totient is φ = 219776000.

The previous prime is 389204401. The next prime is 389204437. The reversal of 389204409 is 904402983.

It is not a de Polignac number, because 389204409 - 2³ = 389204401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389204401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53227 + ... + 60095.

It is an arithmetic number, because the mean of its divisors is an integer number (18919980).

Almost surely, 2^389204409 is an apocalyptic number.

It is an amenable number.

389204409 is a deficient number, since it is larger than the sum of its proper divisors (216234951).

389204409 is a wasteful number, since it uses less digits than its factorization.

389204409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 389204409 is about 19728.2642166005. The cubic root of 389204409 is about 730.1172070515.

The spelling of 389204409 in words is "three hundred eighty-nine million, two hundred four thousand, four hundred nine".