8421960229 has 4 divisors (see below), whose sum is σ = 8440389484. Its totient is φ = 8403530976.

The previous prime is 8421960179. The next prime is 8421960257. The reversal of 8421960229 is 9220691248.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5610309604 + 2811650625 = 74902^2 + 53025^2 .

It is a cyclic number.

It is not a de Polignac number, because 8421960229 - 2¹⁵ = 8421927461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421960269) 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, 9213942 + ... + 9214855.

It is an arithmetic number, because the mean of its divisors is an integer number (2110097371).

Almost surely, 2^8421960229 is an apocalyptic number.

It is an amenable number.

8421960229 is a deficient number, since it is larger than the sum of its proper divisors (18429255).

8421960229 is a wasteful number, since it uses less digits than its factorization.

8421960229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18429254.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 8421960229 is about 91771.2385717878. The cubic root of 8421960229 is about 2034.5626242808.

The spelling of 8421960229 in words is "eight billion, four hundred twenty-one million, nine hundred sixty thousand, two hundred twenty-nine".