6894479089 has 9 divisors (see below), whose sum is σ = 7062201849. Its totient is φ = 6730654980.

The previous prime is 6894478999. The next prime is 6894479093. The reversal of 6894479089 is 9809744986.

The square root of 6894479089 is 83033.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6894479089 - 2¹⁷ = 6894348017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6894479089.

It is not an unprimeable number, because it can be changed into a prime (6894477089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3569454 + ... + 3571384.

Almost surely, 2^6894479089 is an apocalyptic number.

6894479089 is the 83033-rd square number.

6894479089 is the 41517-th centered octagonal number.

It is an amenable number.

6894479089 is a deficient number, since it is larger than the sum of its proper divisors (167722760).

6894479089 is an frugal number, since it uses more digits than its factorization.

6894479089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3948 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The cubic root of 6894479089 is about 1903.2703684908.

Multiplying 6894479089 by its sum of digits (64), we get a square (441246661696 = 664264²).

The spelling of 6894479089 in words is "six billion, eight hundred ninety-four million, four hundred seventy-nine thousand, eighty-nine".