2020023989 has 2 divisors, whose sum is σ = 2020023990. Its totient is φ = 2020023988.

The previous prime is 2020023979. The next prime is 2020024001. The reversal of 2020023989 is 9893200202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1307400964 + 712623025 = 36158^2 + 26695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020023989 - 2²⁸ = 1751588533 is a prime.

It is a super-2 number, since 2×2020023989² = 8160993832270944242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020023979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010011994 + 1010011995.

It is an arithmetic number, because the mean of its divisors is an integer number (1010011995).

Almost surely, 2^2020023989 is an apocalyptic number.

It is an amenable number.

2020023989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020023989 is an equidigital number, since it uses as much as digits as its factorization.

2020023989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2020023989 is about 44944.6769818184. The cubic root of 2020023989 is about 1264.1118689127. Note that the first 3 decimals are identical.

The spelling of 2020023989 in words is "two billion, twenty million, twenty-three thousand, nine hundred eighty-nine".