19995099 has 8 divisors (see below), whose sum is σ = 26725440. Its totient is φ = 13297416.

The previous prime is 19995089. The next prime is 19995103. The reversal of 19995099 is 99059991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19995099 - 2⁴ = 19995083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19995029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6697 + ... + 9210.

It is an arithmetic number, because the mean of its divisors is an integer number (3340680).

Almost surely, 2^19995099 is an apocalyptic number.

19995099 is a deficient number, since it is larger than the sum of its proper divisors (6730341).

19995099 is a wasteful number, since it uses less digits than its factorization.

19995099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329.

The product of its (nonzero) digits is 295245, while the sum is 51.

The square root of 19995099 is about 4471.5879729689. The cubic root of 19995099 is about 271.4195875802.

The spelling of 19995099 in words is "nineteen million, nine hundred ninety-five thousand, ninety-nine".