99917012 has 12 divisors (see below), whose sum is σ = 188305236. Its totient is φ = 46115520.

The previous prime is 99917011. The next prime is 99917039. The reversal of 99917012 is 21071999.

It can be written as a sum of positive squares in 2 ways, for example, as 27394756 + 72522256 = 5234^2 + 8516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99917011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960689 + ... + 960792.

It is an arithmetic number, because the mean of its divisors is an integer number (15692103).

Almost surely, 2^99917012 is an apocalyptic number.

It is an amenable number.

99917012 is a deficient number, since it is larger than the sum of its proper divisors (88388224).

99917012 is a wasteful number, since it uses less digits than its factorization.

99917012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921498 (or 1921496 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 99917012 is about 9995.8497387666. The cubic root of 99917012 is about 464.0304491017.

The spelling of 99917012 in words is "ninety-nine million, nine hundred seventeen thousand, twelve".