6869861421 has 32 divisors (see below), whose sum is σ = 9673095168. Its totient is φ = 4328385600.

The previous prime is 6869861413. The next prime is 6869861437. The reversal of 6869861421 is 1241689686.

It is not a de Polignac number, because 6869861421 - 2³ = 6869861413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6869861461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2050870 + ... + 2054216.

It is an arithmetic number, because the mean of its divisors is an integer number (302284224).

Almost surely, 2^6869861421 is an apocalyptic number.

It is an amenable number.

6869861421 is a deficient number, since it is larger than the sum of its proper divisors (2803233747).

6869861421 is a wasteful number, since it uses less digits than its factorization.

6869861421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its digits is 995328, while the sum is 51.

The square root of 6869861421 is about 82884.6271693370. The cubic root of 6869861421 is about 1901.0023723837.

The spelling of 6869861421 in words is "six billion, eight hundred sixty-nine million, eight hundred sixty-one thousand, four hundred twenty-one".