4023195989 has 2 divisors, whose sum is σ = 4023195990. Its totient is φ = 4023195988.

The previous prime is 4023195887. The next prime is 4023195997. The reversal of 4023195989 is 9895913204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3618984964 + 404211025 = 60158^2 + 20105^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023195989 - 2²⁸ = 3754760533 is a prime.

It is a super-2 number, since 2×4023195989² = 32372211931811376242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4023195089) 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, 2011597994 + 2011597995.

It is an arithmetic number, because the mean of its divisors is an integer number (2011597995).

Almost surely, 2^4023195989 is an apocalyptic number.

It is an amenable number.

4023195989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023195989 is an equidigital number, since it uses as much as digits as its factorization.

4023195989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 4023195989 is about 63428.6685103826. The cubic root of 4023195989 is about 1590.4635844807.

The spelling of 4023195989 in words is "four billion, twenty-three million, one hundred ninety-five thousand, nine hundred eighty-nine".