19797422 has 4 divisors (see below), whose sum is σ = 29696136. Its totient is φ = 9898710.

The previous prime is 19797419. The next prime is 19797431. The reversal of 19797422 is 22479791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22479791 = 53 ⋅424147.

It is a self number, because there is not a number n which added to its sum of digits gives 19797422.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4949354 + ... + 4949357.

It is an arithmetic number, because the mean of its divisors is an integer number (7424034).

Almost surely, 2^19797422 is an apocalyptic number.

19797422 is a deficient number, since it is larger than the sum of its proper divisors (9898714).

19797422 is an equidigital number, since it uses as much as digits as its factorization.

19797422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9898713.

The product of its digits is 63504, while the sum is 41.

The square root of 19797422 is about 4449.4294016199. The cubic root of 19797422 is about 270.5221810355.

The spelling of 19797422 in words is "nineteen million, seven hundred ninety-seven thousand, four hundred twenty-two".