19480447 has 4 divisors (see below), whose sum is σ = 22263376. Its totient is φ = 16697520.

The previous prime is 19480427. The next prime is 19480457. The reversal of 19480447 is 74408491.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19480447 - 2¹⁵ = 19447679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19480427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391454 + ... + 1391467.

It is an arithmetic number, because the mean of its divisors is an integer number (5565844).

Almost surely, 2^19480447 is an apocalyptic number.

19480447 is a deficient number, since it is larger than the sum of its proper divisors (2782929).

19480447 is an equidigital number, since it uses as much as digits as its factorization.

19480447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782928.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 19480447 is about 4413.6659366110. The cubic root of 19480447 is about 269.0706364529.

The spelling of 19480447 in words is "nineteen million, four hundred eighty thousand, four hundred forty-seven".