13919664 has 80 divisors (see below), whose sum is σ = 40247424. Its totient is φ = 4108800.

The previous prime is 13919663. The next prime is 13919683. The reversal of 13919664 is 46691931.

It is not an unprimeable number, because it can be changed into a prime (13919663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21327 + ... + 21969.

Almost surely, 2^13919664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13919664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20123712).

13919664 is an abundant number, since it is smaller than the sum of its proper divisors (26327760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13919664 is a wasteful number, since it uses less digits than its factorization.

13919664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 700 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 13919664 is about 3730.9065922373. The cubic root of 13919664 is about 240.5523389762.

The spelling of 13919664 in words is "thirteen million, nine hundred nineteen thousand, six hundred sixty-four".