99930845 has 24 divisors (see below), whose sum is σ = 147707064. Its totient is φ = 64490496.

The previous prime is 99930841. The next prime is 99930847. The reversal of 99930845 is 54803999.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 98942809 = 994^2 + 9947^2 .

It is not a de Polignac number, because 99930845 - 2² = 99930841 is a prime.

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 99930845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99930841) 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, 7832 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (6154461).

Almost surely, 2^99930845 is an apocalyptic number.

It is an amenable number.

99930845 is a deficient number, since it is larger than the sum of its proper divisors (47776219).

99930845 is a wasteful number, since it uses less digits than its factorization.

99930845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24029 (or 24022 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 99930845 is about 9996.5416519915. The cubic root of 99930845 is about 464.0518623288.

The spelling of 99930845 in words is "ninety-nine million, nine hundred thirty thousand, eight hundred forty-five".