385409005 has 16 divisors (see below), whose sum is σ = 472942080. Its totient is φ = 301436928.

The previous prime is 385408993. The next prime is 385409009. The reversal of 385409005 is 500904583.

It is a cyclic number.

It is not a de Polignac number, because 385409005 - 2²⁷ = 251191277 is a prime.

It is a super-2 number, since 2×385409005² = 297080202270180050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385409009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35949 + ... + 45421.

It is an arithmetic number, because the mean of its divisors is an integer number (29558880).

Almost surely, 2^385409005 is an apocalyptic number.

It is an amenable number.

385409005 is a deficient number, since it is larger than the sum of its proper divisors (87533075).

385409005 is a wasteful number, since it uses less digits than its factorization.

385409005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9660.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 385409005 is about 19631.8365162305. The cubic root of 385409005 is about 727.7361561747.

The spelling of 385409005 in words is "three hundred eighty-five million, four hundred nine thousand, five".