19924099 has 8 divisors (see below), whose sum is σ = 21913920. Its totient is φ = 17999616.

The previous prime is 19924087. The next prime is 19924111. The reversal of 19924099 is 99042991.

It is an interprime number because it is at equal distance from previous prime (19924087) and next prime (19924111).

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 19924099 - 2⁷ = 19923971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19924039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15694 + ... + 16915.

It is an arithmetic number, because the mean of its divisors is an integer number (2739240).

Almost surely, 2^19924099 is an apocalyptic number.

19924099 is a deficient number, since it is larger than the sum of its proper divisors (1989821).

19924099 is a wasteful number, since it uses less digits than its factorization.

19924099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32669.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 19924099 is about 4463.6418987190. The cubic root of 19924099 is about 271.0979480095.

The spelling of 19924099 in words is "nineteen million, nine hundred twenty-four thousand, ninety-nine".