9999250 has 64 divisors (see below), whose sum is σ = 20487168. Its totient is φ = 3643200.

The previous prime is 9999233. The next prime is 9999271. The reversal of 9999250 is 529999.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9999197 and 9999206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212727 + ... + 212773.

It is an arithmetic number, because the mean of its divisors is an integer number (320112).

Almost surely, 2^9999250 is an apocalyptic number.

9999250 is an abundant number, since it is smaller than the sum of its proper divisors (10487918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999250 is a wasteful number, since it uses less digits than its factorization.

9999250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 43.

The square root of 9999250 is about 3162.1590725326. The cubic root of 9999250 is about 215.4380827818.

The spelling of 9999250 in words is "nine million, nine hundred ninety-nine thousand, two hundred fifty".