99889645 has 8 divisors (see below), whose sum is σ = 122655456. Its totient is φ = 78053136.

The previous prime is 99889633. The next prime is 99889651. The reversal of 99889645 is 54698899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99889645 - 2¹⁷ = 99758573 is a prime.

It is a super-3 number, since 3×99889645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99889645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232087 + ... + 232516.

It is an arithmetic number, because the mean of its divisors is an integer number (15331932).

Almost surely, 2^99889645 is an apocalyptic number.

It is an amenable number.

99889645 is a deficient number, since it is larger than the sum of its proper divisors (22765811).

99889645 is a wasteful number, since it uses less digits than its factorization.

99889645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464651.

The product of its digits is 5598720, while the sum is 58.

The square root of 99889645 is about 9994.4807268812. The cubic root of 99889645 is about 463.9880796705.

The spelling of 99889645 in words is "ninety-nine million, eight hundred eighty-nine thousand, six hundred forty-five".