9985939450 has 24 divisors (see below), whose sum is σ = 19005801408. Its totient is φ = 3901482480.

The previous prime is 9985939393. The next prime is 9985939487. The reversal of 9985939450 is 549395899.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2320162 + ... + 2324461.

It is an arithmetic number, because the mean of its divisors is an integer number (791908392).

Almost surely, 2^9985939450 is an apocalyptic number.

9985939450 is a deficient number, since it is larger than the sum of its proper divisors (9019861958).

9985939450 is a wasteful number, since it uses less digits than its factorization.

9985939450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644678 (or 4644673 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 61.

The square root of 9985939450 is about 99929.6725202279. The cubic root of 9985939450 is about 2153.4244651839.

The spelling of 9985939450 in words is "nine billion, nine hundred eighty-five million, nine hundred thirty-nine thousand, four hundred fifty".