6938842 has 4 divisors (see below), whose sum is σ = 10408266. Its totient is φ = 3469420.

The previous prime is 6938837. The next prime is 6938849. The reversal of 6938842 is 2488396.

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

It can be written as a sum of positive squares in only one way, i.e., 6754801 + 184041 = 2599^2 + 429^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁴ + 9² + 3¹⁴ + 8⁵ + 8⁷ + 4⁷ + 2¹³ .

It is a junction number, because it is equal to n+sod(n) for n = 6938795 and 6938804.

It is not an unprimeable number, because it can be changed into a prime (6938849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1734709 + ... + 1734712.

Almost surely, 2^6938842 is an apocalyptic number.

6938842 is a deficient number, since it is larger than the sum of its proper divisors (3469424).

6938842 is a wasteful number, since it uses less digits than its factorization.

6938842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469423.

The product of its digits is 82944, while the sum is 40.

The square root of 6938842 is about 2634.1681799004. The cubic root of 6938842 is about 190.7343877055.

The spelling of 6938842 in words is "six million, nine hundred thirty-eight thousand, eight hundred forty-two".