38806405 has 16 divisors (see below), whose sum is σ = 53011584. Its totient is φ = 26994880.

The previous prime is 38806367. The next prime is 38806409. The reversal of 38806405 is 50460883.

It is not a de Polignac number, because 38806405 - 2⁷ = 38806277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38806409) 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, 14074 + ... + 16603.

It is an arithmetic number, because the mean of its divisors is an integer number (3313224).

Almost surely, 2^38806405 is an apocalyptic number.

It is an amenable number.

38806405 is a deficient number, since it is larger than the sum of its proper divisors (14205179).

38806405 is a wasteful number, since it uses less digits than its factorization.

38806405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30716.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 38806405 is about 6229.4787101330. The cubic root of 38806405 is about 338.5590836999.

The spelling of 38806405 in words is "thirty-eight million, eight hundred six thousand, four hundred five".