2229728399 has 8 divisors (see below), whose sum is σ = 2327855712. Its totient is φ = 2131699680.

The previous prime is 2229728377. The next prime is 2229728401. The reversal of 2229728399 is 9938279222.

It is a Cunningham number, because it is equal to 47220²-1.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2229728399 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 2229728399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229728359) 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 7 ways as a sum of consecutive naturals, for example, 23609 + ... + 70829.

It is an arithmetic number, because the mean of its divisors is an integer number (290981964).

Almost surely, 2^2229728399 is an apocalyptic number.

2229728399 is a deficient number, since it is larger than the sum of its proper divisors (98127313).

2229728399 is a wasteful number, since it uses less digits than its factorization.

2229728399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49297.

The product of its digits is 1959552, while the sum is 53.

The square root of 2229728399 is about 47219.9999894113. Note that the first 4 decimals coincide. The cubic root of 2229728399 is about 1306.4235136095.

The spelling of 2229728399 in words is "two billion, two hundred twenty-nine million, seven hundred twenty-eight thousand, three hundred ninety-nine".