19799492 has 12 divisors (see below), whose sum is σ = 36687420. Its totient is φ = 9317376.

The previous prime is 19799491. The next prime is 19799497. The reversal of 19799492 is 29499791.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 14258176 = 2354^2 + 3776^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19799492.

It is not an unprimeable number, because it can be changed into a prime (19799491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145517 + ... + 145652.

It is an arithmetic number, because the mean of its divisors is an integer number (3057285).

Almost surely, 2^19799492 is an apocalyptic number.

It is an amenable number.

19799492 is a deficient number, since it is larger than the sum of its proper divisors (16887928).

19799492 is a wasteful number, since it uses less digits than its factorization.

19799492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291190 (or 291188 counting only the distinct ones).

The product of its digits is 367416, while the sum is 50.

The square root of 19799492 is about 4449.6620096362. The cubic root of 19799492 is about 270.5316092226.

The spelling of 19799492 in words is "nineteen million, seven hundred ninety-nine thousand, four hundred ninety-two".