938405 has 8 divisors (see below), whose sum is σ = 1212792. Its totient is φ = 692928.

The previous prime is 938393. The next prime is 938437. The reversal of 938405 is 504839.

938405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 923521 = 122^2 + 961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 938405 - 2⁶ = 938341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7154 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (151599).

2⁹³⁸⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

938405 is a deficient number, since it is larger than the sum of its proper divisors (274387).

938405 is a wasteful number, since it uses less digits than its factorization.

938405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14455.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 938405 is about 968.7130638120. The cubic root of 938405 is about 97.9031738362.

The spelling of 938405 in words is "nine hundred thirty-eight thousand, four hundred five".