6938405 has 4 divisors (see below), whose sum is σ = 8326092. Its totient is φ = 5550720.

The previous prime is 6938383. The next prime is 6938417. The reversal of 6938405 is 5048396.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5134756 + 1803649 = 2266^2 + 1343^2 .

It is not a de Polignac number, because 6938405 - 2¹⁶ = 6872869 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 3 ways as a sum of consecutive naturals, for example, 693836 + ... + 693845.

It is an arithmetic number, because the mean of its divisors is an integer number (2081523).

Almost surely, 2^6938405 is an apocalyptic number.

It is an amenable number.

6938405 is a deficient number, since it is larger than the sum of its proper divisors (1387687).

6938405 is a wasteful number, since it uses less digits than its factorization.

6938405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387686.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6938405 is about 2634.0852302080. The cubic root of 6938405 is about 190.7303835466.

The spelling of 6938405 in words is "six million, nine hundred thirty-eight thousand, four hundred five".