6978430889 has 8 divisors (see below), whose sum is σ = 7113399552. Its totient is φ = 6844481280.

The previous prime is 6978430873. The next prime is 6978430919. The reversal of 6978430889 is 9880348796.

It is a happy number.

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 6978430889 - 2⁴ = 6978430873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6978430829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240929 + ... + 268334.

It is an arithmetic number, because the mean of its divisors is an integer number (889174944).

Almost surely, 2^6978430889 is an apocalyptic number.

It is an amenable number.

6978430889 is a deficient number, since it is larger than the sum of its proper divisors (134968663).

6978430889 is a wasteful number, since it uses less digits than its factorization.

6978430889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509527.

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

The square root of 6978430889 is about 83537.0031123933. The cubic root of 6978430889 is about 1910.9643886719.

The spelling of 6978430889 in words is "six billion, nine hundred seventy-eight million, four hundred thirty thousand, eight hundred eighty-nine".