19740099 has 8 divisors (see below), whose sum is σ = 26414272. Its totient is φ = 13113000.

The previous prime is 19740067. The next prime is 19740121. The reversal of 19740099 is 99004791.

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

It is not a de Polignac number, because 19740099 - 2⁵ = 19740067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19740199) 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, 10777 + ... + 12474.

It is an arithmetic number, because the mean of its divisors is an integer number (3301784).

Almost surely, 2^19740099 is an apocalyptic number.

19740099 is a deficient number, since it is larger than the sum of its proper divisors (6674173).

19740099 is a wasteful number, since it uses less digits than its factorization.

19740099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23537.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 19740099 is about 4442.9831194818. The cubic root of 19740099 is about 270.2608316206.

The spelling of 19740099 in words is "nineteen million, seven hundred forty thousand, ninety-nine".