99988145 has 8 divisors (see below), whose sum is σ = 120411456. Its totient is φ = 79706736.

The previous prime is 99988139. The next prime is 99988219. The reversal of 99988145 is 54188999.

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 99988145 - 2¹⁴ = 99971761 is a prime.

It is a Duffinian 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, 33917 + ... + 36746.

It is an arithmetic number, because the mean of its divisors is an integer number (15051432).

Almost surely, 2^99988145 is an apocalyptic number.

It is an amenable number.

99988145 is a deficient number, since it is larger than the sum of its proper divisors (20423311).

99988145 is a wasteful number, since it uses less digits than its factorization.

99988145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70951.

The product of its digits is 933120, while the sum is 53.

The square root of 99988145 is about 9999.4072324313. The cubic root of 99988145 is about 464.1405406245.

The spelling of 99988145 in words is "ninety-nine million, nine hundred eighty-eight thousand, one hundred forty-five".