6878990438 has 8 divisors (see below), whose sum is σ = 10319322888. Its totient is φ = 3439216144.

The previous prime is 6878990431. The next prime is 6878990441. The reversal of 6878990438 is 8340998786.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878990431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107231 + ... + 158922.

It is an arithmetic number, because the mean of its divisors is an integer number (1289915361).

Almost surely, 2^6878990438 is an apocalyptic number.

6878990438 is a deficient number, since it is larger than the sum of its proper divisors (3440332450).

6878990438 is a wasteful number, since it uses less digits than its factorization.

6878990438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279078.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The square root of 6878990438 is about 82939.6795146931. The cubic root of 6878990438 is about 1901.8440488262.

The spelling of 6878990438 in words is "six billion, eight hundred seventy-eight million, nine hundred ninety thousand, four hundred thirty-eight".