385804405 has 32 divisors (see below), whose sum is σ = 562786560. Its totient is φ = 248002560.

The previous prime is 385804403. The next prime is 385804451. The reversal of 385804405 is 504408583.

It is a happy number.

It is not a de Polignac number, because 385804405 - 2¹ = 385804403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385804403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61515 + ... + 67495.

It is an arithmetic number, because the mean of its divisors is an integer number (17587080).

Almost surely, 2^385804405 is an apocalyptic number.

385804405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

385804405 is a deficient number, since it is larger than the sum of its proper divisors (176982155).

385804405 is a wasteful number, since it uses less digits than its factorization.

385804405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 385804405 is about 19641.9043119551. The cubic root of 385804405 is about 727.9849382274.

The spelling of 385804405 in words is "three hundred eighty-five million, eight hundred four thousand, four hundred five".