13992444 has 36 divisors (see below), whose sum is σ = 35743344. Its totient is φ = 4614912.

The previous prime is 13992443. The next prime is 13992449. The reversal of 13992444 is 44429931.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13992399 and 13992408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13992443) 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 in 11 ways as a sum of consecutive naturals, for example, 1489 + ... + 5495.

Almost surely, 2^13992444 is an apocalyptic number.

It is an amenable number.

13992444 is an abundant number, since it is smaller than the sum of its proper divisors (21750900).

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

13992444 is a wasteful number, since it uses less digits than its factorization.

13992444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114 (or 4109 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 13992444 is about 3740.6475375261. The cubic root of 13992444 is about 240.9708590076.

The spelling of 13992444 in words is "thirteen million, nine hundred ninety-two thousand, four hundred forty-four".