9989253970 has 32 divisors (see below), whose sum is σ = 19116456192. Its totient is φ = 3749858112.

The previous prime is 9989253887. The next prime is 9989253983. The reversal of 9989253970 is 793529899.

It is a junction number, because it is equal to n+sod(n) for n = 9989253899 and 9989253908.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 397542 + ... + 421921.

It is an arithmetic number, because the mean of its divisors is an integer number (597389256).

Almost surely, 2^9989253970 is an apocalyptic number.

9989253970 is a deficient number, since it is larger than the sum of its proper divisors (9127202222).

9989253970 is a wasteful number, since it uses less digits than its factorization.

9989253970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819546.

The product of its (nonzero) digits is 11022480, while the sum is 61.

The square root of 9989253970 is about 99946.2554075939. The cubic root of 9989253970 is about 2153.6626927752.

The spelling of 9989253970 in words is "nine billion, nine hundred eighty-nine million, two hundred fifty-three thousand, nine hundred seventy".