6919438 has 4 divisors (see below), whose sum is σ = 10379160. Its totient is φ = 3459718.

The previous prime is 6919433. The next prime is 6919441. The reversal of 6919438 is 8349196.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 6919438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6919433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1729858 + ... + 1729861.

It is an arithmetic number, because the mean of its divisors is an integer number (2594790).

Almost surely, 2^6919438 is an apocalyptic number.

6919438 is a deficient number, since it is larger than the sum of its proper divisors (3459722).

6919438 is a wasteful number, since it uses less digits than its factorization.

6919438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459721.

The product of its digits is 46656, while the sum is 40.

The square root of 6919438 is about 2630.4824652523. The cubic root of 6919438 is about 190.5564298030.

The spelling of 6919438 in words is "six million, nine hundred nineteen thousand, four hundred thirty-eight".