9999012 has 12 divisors (see below), whose sum is σ = 23331056. Its totient is φ = 3333000.

The previous prime is 9998977. The next prime is 9999047. The reversal of 9999012 is 2109999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9998977) and next prime (9999047).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×9999012² = 199960481952288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416614 + ... + 416637.

Almost surely, 2^9999012 is an apocalyptic number.

It is an amenable number.

9999012 is an abundant number, since it is smaller than the sum of its proper divisors (13332044).

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

9999012 is a wasteful number, since it uses less digits than its factorization.

9999012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833258 (or 833256 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 9999012 is about 3162.1214397932. The cubic root of 9999012 is about 215.4363734979.

It can be divided in two parts, 999 and 9012, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 9999012 in words is "nine million, nine hundred ninety-nine thousand, twelve".