99009965 has 32 divisors (see below), whose sum is σ = 127388160. Its totient is φ = 73764864.

The previous prime is 99009961. The next prime is 99009971. The reversal of 99009965 is 56990099.

It is a cyclic number.

It is not a de Polignac number, because 99009965 - 2² = 99009961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

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 31 ways as a sum of consecutive naturals, for example, 512909 + ... + 513101.

It is an arithmetic number, because the mean of its divisors is an integer number (3980880).

Almost surely, 2^99009965 is an apocalyptic number.

It is an amenable number.

99009965 is a deficient number, since it is larger than the sum of its proper divisors (28378195).

99009965 is a wasteful number, since it uses less digits than its factorization.

99009965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 99009965 is about 9950.3751185571. The cubic root of 99009965 is about 462.6220218581.

The spelling of 99009965 in words is "ninety-nine million, nine thousand, nine hundred sixty-five".