9999412 has 6 divisors (see below), whose sum is σ = 17498978. Its totient is φ = 4999704.

The previous prime is 9999401. The next prime is 9999419. The reversal of 9999412 is 2149999.

It can be written as a sum of positive squares in only one way, i.e., 7420176 + 2579236 = 2724^2 + 1606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249923 + ... + 1249930.

Almost surely, 2^9999412 is an apocalyptic number.

It is an amenable number.

9999412 is a deficient number, since it is larger than the sum of its proper divisors (7499566).

9999412 is a wasteful number, since it uses less digits than its factorization.

9999412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499857 (or 2499855 counting only the distinct ones).

The product of its digits is 52488, while the sum is 43.

The square root of 9999412 is about 3162.1846878385. The cubic root of 9999412 is about 215.4392462284.

The spelling of 9999412 in words is "nine million, nine hundred ninety-nine thousand, four hundred twelve".