19899484 has 24 divisors (see below), whose sum is σ = 38103408. Its totient is φ = 9018240.

The previous prime is 19899463. The next prime is 19899511. The reversal of 19899484 is 48499891.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 26782 + ... + 27514.

It is an arithmetic number, because the mean of its divisors is an integer number (1587642).

Almost surely, 2^19899484 is an apocalyptic number.

It is an amenable number.

19899484 is a deficient number, since it is larger than the sum of its proper divisors (18203924).

19899484 is a wasteful number, since it uses less digits than its factorization.

19899484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1363 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 19899484 is about 4460.8837689409. The cubic root of 19899484 is about 270.9862603837.

The spelling of 19899484 in words is "nineteen million, eight hundred ninety-nine thousand, four hundred eighty-four".