99999045 has 24 divisors (see below), whose sum is σ = 173600856. Its totient is φ = 53250048.

The previous prime is 99999043. The next prime is 99999073. The reversal of 99999045 is 54099999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34680321 + 65318724 = 5889^2 + 8082^2 .

It is not a de Polignac number, because 99999045 - 2¹ = 99999043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99998982 and 99999000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999043) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 37269 + ... + 39861.

It is an arithmetic number, because the mean of its divisors is an integer number (7233369).

Almost surely, 2^99999045 is an apocalyptic number.

It is an amenable number.

99999045 is a deficient number, since it is larger than the sum of its proper divisors (73601811).

99999045 is a wasteful number, since it uses less digits than its factorization.

99999045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461 (or 3458 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 99999045 is about 9999.9522498860. The cubic root of 99999045 is about 464.1574057841.

It can be divided in two parts, 9999 and 9045, that added together give a square (19044 = 138²).

The spelling of 99999045 in words is "ninety-nine million, nine hundred ninety-nine thousand, forty-five".