99900045 has 48 divisors (see below), whose sum is σ = 200333952. Its totient is φ = 45106560.

The previous prime is 99900029. The next prime is 99900077. The reversal of 99900045 is 54000999.

It is not a de Polignac number, because 99900045 - 2⁴ = 99900029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99899982 and 99900009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24235 + ... + 28055.

It is an arithmetic number, because the mean of its divisors is an integer number (4173624).

Almost surely, 2^99900045 is an apocalyptic number.

It is an amenable number.

99900045 is an abundant number, since it is smaller than the sum of its proper divisors (100433907).

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

99900045 is a wasteful number, since it uses less digits than its factorization.

99900045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3919 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 99900045 is about 9995.0010005002. The cubic root of 99900045 is about 464.0041818019.

The spelling of 99900045 in words is "ninety-nine million, nine hundred thousand, forty-five".