99917930 has 16 divisors (see below), whose sum is σ = 205545600. Its totient is φ = 34257552.

The previous prime is 99917927. The next prime is 99917933. The reversal of 99917930 is 3971999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99917927) and next prime (99917933).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99917933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713630 + ... + 713769.

It is an arithmetic number, because the mean of its divisors is an integer number (12846600).

Almost surely, 2^99917930 is an apocalyptic number.

99917930 is an abundant number, since it is smaller than the sum of its proper divisors (105627670).

99917930 is a wasteful number, since it uses less digits than its factorization.

99917930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427413.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 99917930 is about 9995.8956577187. The cubic root of 99917930 is about 464.0318702098.

The spelling of 99917930 in words is "ninety-nine million, nine hundred seventeen thousand, nine hundred thirty".