2287421929 has 15 divisors (see below), whose sum is σ = 2486820993. Its totient is φ = 2104005384.

The previous prime is 2287421887. The next prime is 2287421933. The reversal of 2287421929 is 9291247822.

The square root of 2287421929 is 47827.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1134140329 + 1153281600 = 33677^2 + 33960^2 .

It is not a de Polignac number, because 2287421929 - 2¹¹ = 2287419881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2287421999) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 8082622 + ... + 8082904.

Almost surely, 2^2287421929 is an apocalyptic number.

2287421929 is the 47827-th square number.

2287421929 is the 23914-th centered octagonal number.

It is an amenable number.

2287421929 is a deficient number, since it is larger than the sum of its proper divisors (199399064).

2287421929 is an frugal number, since it uses more digits than its factorization.

2287421929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 296 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The cubic root of 2287421929 is about 1317.5954712156.

The spelling of 2287421929 in words is "two billion, two hundred eighty-seven million, four hundred twenty-one thousand, nine hundred twenty-nine".