19797369 has 4 divisors (see below), whose sum is σ = 26396496. Its totient is φ = 13198244.

The previous prime is 19797359. The next prime is 19797389. The reversal of 19797369 is 96379791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19797369 - 2⁷ = 19797241 is a prime.

It is a super-2 number, since 2×19797369² = 783871638644322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19797359) 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 3 ways as a sum of consecutive naturals, for example, 3299559 + ... + 3299564.

It is an arithmetic number, because the mean of its divisors is an integer number (6599124).

Almost surely, 2^19797369 is an apocalyptic number.

It is an amenable number.

19797369 is a deficient number, since it is larger than the sum of its proper divisors (6599127).

19797369 is an equidigital number, since it uses as much as digits as its factorization.

19797369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599126.

The product of its digits is 642978, while the sum is 51.

The square root of 19797369 is about 4449.4234457961. The cubic root of 19797369 is about 270.5219396288.

The spelling of 19797369 in words is "nineteen million, seven hundred ninety-seven thousand, three hundred sixty-nine".