4015223209 has 2 divisors, whose sum is σ = 4015223210. Its totient is φ = 4015223208.

The previous prime is 4015223197. The next prime is 4015223213. The reversal of 4015223209 is 9023225104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2460656025 + 1554567184 = 49605^2 + 39428^2 .

It is a cyclic number.

It is not a de Polignac number, because 4015223209 - 2²⁵ = 3981668777 is a prime.

It is a super-2 number, since 2×4015223209² = 32244034836184515362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4015223249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2007611604 + 2007611605.

It is an arithmetic number, because the mean of its divisors is an integer number (2007611605).

Almost surely, 2^4015223209 is an apocalyptic number.

It is an amenable number.

4015223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4015223209 is an equidigital number, since it uses as much as digits as its factorization.

4015223209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4015223209 is about 63365.7889479804. The cubic root of 4015223209 is about 1589.4122808406.

The spelling of 4015223209 in words is "four billion, fifteen million, two hundred twenty-three thousand, two hundred nine".