6891399230 has 16 divisors (see below), whose sum is σ = 12405554784. Its totient is φ = 2756329440.

The previous prime is 6891399181. The next prime is 6891399239. The reversal of 6891399230 is 329931986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6891399239) 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, 149519 + ... + 190101.

It is an arithmetic number, because the mean of its divisors is an integer number (775347174).

Almost surely, 2^6891399230 is an apocalyptic number.

6891399230 is a deficient number, since it is larger than the sum of its proper divisors (5514155554).

6891399230 is a wasteful number, since it uses less digits than its factorization.

6891399230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57571.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 6891399230 is about 83014.4519345879. The cubic root of 6891399230 is about 1902.9869205626.

The spelling of 6891399230 in words is "six billion, eight hundred ninety-one million, three hundred ninety-nine thousand, two hundred thirty".