19799694 has 32 divisors (see below), whose sum is σ = 45027840. Its totient is φ = 6445656.

The previous prime is 19799693. The next prime is 19799707. The reversal of 19799694 is 49699791.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19799694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19799693) 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 15 ways as a sum of consecutive naturals, for example, 1942 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (1407120).

Almost surely, 2^19799694 is an apocalyptic number.

19799694 is an abundant number, since it is smaller than the sum of its proper divisors (25228146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19799694 is a wasteful number, since it uses less digits than its factorization.

19799694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581 (or 8575 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 19799694 is about 4449.6847079316. The cubic root of 19799694 is about 270.5325292327.

The spelling of 19799694 in words is "nineteen million, seven hundred ninety-nine thousand, six hundred ninety-four".