6892469891 has 4 divisors (see below), whose sum is σ = 6902056800. Its totient is φ = 6882882984.

The previous prime is 6892469813. The next prime is 6892469923. The reversal of 6892469891 is 1989642986.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6892469891 is a prime.

It is a super-2 number, since 2×6892469891² = 95012282396683103762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6892469191) 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, 4792376 + ... + 4793813.

It is an arithmetic number, because the mean of its divisors is an integer number (1725514200).

Almost surely, 2^6892469891 is an apocalyptic number.

6892469891 is a deficient number, since it is larger than the sum of its proper divisors (9586909).

6892469891 is an equidigital number, since it uses as much as digits as its factorization.

6892469891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9586908.

The product of its digits is 13436928, while the sum is 62.

The square root of 6892469891 is about 83020.9003263636. The cubic root of 6892469891 is about 1903.0854660252.

The spelling of 6892469891 in words is "six billion, eight hundred ninety-two million, four hundred sixty-nine thousand, eight hundred ninety-one".