8294918621 has 4 divisors (see below), whose sum is σ = 9049002144. Its totient is φ = 7540835100.

The previous prime is 8294918591. The next prime is 8294918627. The reversal of 8294918621 is 1268194928.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8294918621 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 8294918621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8294918627) 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, 377041745 + ... + 377041766.

It is an arithmetic number, because the mean of its divisors is an integer number (2262250536).

Almost surely, 2^8294918621 is an apocalyptic number.

It is an amenable number.

8294918621 is a deficient number, since it is larger than the sum of its proper divisors (754083523).

8294918621 is a wasteful number, since it uses less digits than its factorization.

8294918621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754083522.

The product of its digits is 497664, while the sum is 50.

The square root of 8294918621 is about 91076.4438315419. The cubic root of 8294918621 is about 2024.2805854564.

The spelling of 8294918621 in words is "eight billion, two hundred ninety-four million, nine hundred eighteen thousand, six hundred twenty-one".