3985225823 has 2 divisors, whose sum is σ = 3985225824. Its totient is φ = 3985225822.

The previous prime is 3985225817. The next prime is 3985225843. The reversal of 3985225823 is 3285225893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3985225823 - 2⁸ = 3985225567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985225843) 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, 1992612911 + 1992612912.

It is an arithmetic number, because the mean of its divisors is an integer number (1992612912).

Almost surely, 2^3985225823 is an apocalyptic number.

3985225823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985225823 is an equidigital number, since it uses as much as digits as its factorization.

3985225823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 47.

The square root of 3985225823 is about 63128.6450274358. The cubic root of 3985225823 is about 1585.4442621479. Note that the first 3 decimals are identical.

The spelling of 3985225823 in words is "three billion, nine hundred eighty-five million, two hundred twenty-five thousand, eight hundred twenty-three".