2239666601 has 2 divisors, whose sum is σ = 2239666602. Its totient is φ = 2239666600.

The previous prime is 2239666543. The next prime is 2239666657. The reversal of 2239666601 is 1066669322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2239560976 + 105625 = 47324^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239666601 - 2⁶ = 2239666537 is a prime.

It is a super-2 number, since 2×2239666601² = 10032212967269786402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2239666661) 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 as a sum of consecutive naturals, namely, 1119833300 + 1119833301.

It is an arithmetic number, because the mean of its divisors is an integer number (1119833301).

Almost surely, 2^2239666601 is an apocalyptic number.

It is an amenable number.

2239666601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239666601 is an equidigital number, since it uses as much as digits as its factorization.

2239666601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 2239666601 is about 47325.1159639361. The cubic root of 2239666601 is about 1308.3616059595.

The spelling of 2239666601 in words is "two billion, two hundred thirty-nine million, six hundred sixty-six thousand, six hundred one".