9985172 has 6 divisors (see below), whose sum is σ = 17474058. Its totient is φ = 4992584.

The previous prime is 9985169. The next prime is 9985187. The reversal of 9985172 is 2715899.

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 163216 = 3134^2 + 404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248143 + ... + 1248150.

It is an arithmetic number, because the mean of its divisors is an integer number (2912343).

Almost surely, 2^9985172 is an apocalyptic number.

It is an amenable number.

9985172 is a deficient number, since it is larger than the sum of its proper divisors (7488886).

9985172 is a wasteful number, since it uses less digits than its factorization.

9985172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496297 (or 2496295 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 9985172 is about 3159.9322777553. The cubic root of 9985172 is about 215.3369298018.

The spelling of 9985172 in words is "nine million, nine hundred eighty-five thousand, one hundred seventy-two".