19396 has 12 divisors (see below), whose sum is σ = 36652. Its totient is φ = 8928.

The previous prime is 19391. The next prime is 19403. The reversal of 19396 is 69391.

19396 = T₄₈ + T₄₉ + ... + T₆₀.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6400 + 12996 = 80^2 + 114^2 .

It is not an unprimeable number, because it can be changed into a prime (19391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135 + ... + 238.

2¹⁹³⁹⁶ is an apocalyptic number.

It is an amenable number.

19396 is a deficient number, since it is larger than the sum of its proper divisors (17256).

19396 is a wasteful number, since it uses less digits than its factorization.

19396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its digits is 1458, while the sum is 28.

The square root of 19396 is about 139.2695228684. The cubic root of 19396 is about 26.8681269607.

It can be divided in two parts, 193 and 96, that multiplied together give a triangular number (18528 = T₁₉₂).

The spelling of 19396 in words is "nineteen thousand, three hundred ninety-six".