9885023989 has 2 divisors, whose sum is σ = 9885023990. Its totient is φ = 9885023988.

The previous prime is 9885023963. The next prime is 9885024029. The reversal of 9885023989 is 9893205889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9735768900 + 149255089 = 98670^2 + 12217^2 .

It is a cyclic number.

It is not a de Polignac number, because 9885023989 - 2¹¹ = 9885021941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9885023089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942511994 + 4942511995.

It is an arithmetic number, because the mean of its divisors is an integer number (4942511995).

Almost surely, 2^9885023989 is an apocalyptic number.

It is an amenable number.

9885023989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9885023989 is an equidigital number, since it uses as much as digits as its factorization.

9885023989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The square root of 9885023989 is about 99423.4579412726. The cubic root of 9885023989 is about 2146.1458977666.

The spelling of 9885023989 in words is "nine billion, eight hundred eighty-five million, twenty-three thousand, nine hundred eighty-nine".