2684789421 has 8 divisors (see below), whose sum is σ = 3579958560. Its totient is φ = 1789739952.

The previous prime is 2684789407. The next prime is 2684789423. The reversal of 2684789421 is 1249874862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2684789421 - 2¹⁰ = 2684788397 is a prime.

It is a super-2 number, since 2×2684789421² = 14416188470227030482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684789423) 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, 74115 + ... + 104223.

It is an arithmetic number, because the mean of its divisors is an integer number (447494820).

Almost surely, 2^2684789421 is an apocalyptic number.

It is an amenable number.

2684789421 is a deficient number, since it is larger than the sum of its proper divisors (895169139).

2684789421 is a wasteful number, since it uses less digits than its factorization.

2684789421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59835.

The product of its digits is 1548288, while the sum is 51.

The square root of 2684789421 is about 51814.9536427468. The cubic root of 2684789421 is about 1389.8568630967.

The spelling of 2684789421 in words is "two billion, six hundred eighty-four million, seven hundred eighty-nine thousand, four hundred twenty-one".