99009966 has 16 divisors (see below), whose sum is σ = 216021888. Its totient is φ = 30003000.

The previous prime is 99009961. The next prime is 99009971. The reversal of 99009966 is 66990099.

It is an interprime number because it is at equal distance from previous prime (99009961) and next prime (99009971).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99009961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750010 + ... + 750141.

It is an arithmetic number, because the mean of its divisors is an integer number (13501368).

Almost surely, 2^99009966 is an apocalyptic number.

99009966 is an abundant number, since it is smaller than the sum of its proper divisors (117011922).

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

99009966 is a wasteful number, since it uses less digits than its factorization.

99009966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500167.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 99009966 is about 9950.3751688065. The cubic root of 99009966 is about 462.6220234156.

The spelling of 99009966 in words is "ninety-nine million, nine thousand, nine hundred sixty-six".