2229728401 has 2 divisors, whose sum is σ = 2229728402. Its totient is φ = 2229728400.

The previous prime is 2229728377. The next prime is 2229728411. The reversal of 2229728401 is 1048279222.

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

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2229728400 + 1 = 47220^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 2229728401 - 2³¹ = 82244753 is a prime.

It is not a weakly prime, because it can be changed into another prime (2229728411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114864200 + 1114864201.

It is an arithmetic number, because the mean of its divisors is an integer number (1114864201).

Almost surely, 2^2229728401 is an apocalyptic number.

It is an amenable number.

2229728401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2229728401 is an equidigital number, since it uses as much as digits as its factorization.

2229728401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2229728401 is about 47220.0000105887. Note that the first 4 decimals coincide. The cubic root of 2229728401 is about 1306.4235140001.

The spelling of 2229728401 in words is "two billion, two hundred twenty-nine million, seven hundred twenty-eight thousand, four hundred one".