13985944 has 16 divisors (see below), whose sum is σ = 29970000. Its totient is φ = 5993952.

The previous prime is 13985941. The next prime is 13985969. The reversal of 13985944 is 44958931.

It is a happy number.

It is a super-2 number, since 2×13985944² = 391213259142272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13985944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13985941) 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 3 ways as a sum of consecutive naturals, for example, 124819 + ... + 124930.

It is an arithmetic number, because the mean of its divisors is an integer number (1873125).

Almost surely, 2^13985944 is an apocalyptic number.

13985944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13985944 is an abundant number, since it is smaller than the sum of its proper divisors (15984056).

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

13985944 is a wasteful number, since it uses less digits than its factorization.

13985944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249762 (or 249758 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 13985944 is about 3739.7786030726. The cubic root of 13985944 is about 240.9335399807.

The spelling of 13985944 in words is "thirteen million, nine hundred eighty-five thousand, nine hundred forty-four".