99865045 has 32 divisors (see below), whose sum is σ = 144967680. Its totient is φ = 64514880.

The previous prime is 99865039. The next prime is 99865061. The reversal of 99865045 is 54056899.

It is a de Polignac number, because none of the positive numbers 2^k-99865045 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 99864986 and 99865004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174610 + ... + 175180.

It is an arithmetic number, because the mean of its divisors is an integer number (4530240).

Almost surely, 2^99865045 is an apocalyptic number.

99865045 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99865045 is the 4997-th decagonal number.

It is an amenable number.

99865045 is a deficient number, since it is larger than the sum of its proper divisors (45102635).

99865045 is a wasteful number, since it uses less digits than its factorization.

99865045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 99865045 is about 9993.2499718560. The cubic root of 99865045 is about 463.9499874876.

The spelling of 99865045 in words is "ninety-nine million, eight hundred sixty-five thousand, forty-five".