19953214 has 4 divisors (see below), whose sum is σ = 29929824. Its totient is φ = 9976606.

The previous prime is 19953187. The next prime is 19953217. The reversal of 19953214 is 41235991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41235991 = 1499 ⋅27509.

It is a self number, because there is not a number n which added to its sum of digits gives 19953214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19953217) 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 as a sum of consecutive naturals, namely, 4988302 + ... + 4988305.

It is an arithmetic number, because the mean of its divisors is an integer number (7482456).

Almost surely, 2^19953214 is an apocalyptic number.

19953214 is a deficient number, since it is larger than the sum of its proper divisors (9976610).

19953214 is an equidigital number, since it uses as much as digits as its factorization.

19953214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976609.

The product of its digits is 9720, while the sum is 34.

The square root of 19953214 is about 4466.9020584741. The cubic root of 19953214 is about 271.2299351606.

The spelling of 19953214 in words is "nineteen million, nine hundred fifty-three thousand, two hundred fourteen".