13983945 has 64 divisors (see below), whose sum is σ = 25712640. Its totient is φ = 6451200.

The previous prime is 13983941. The next prime is 13983967. The reversal of 13983945 is 54938931.

It is not a de Polignac number, because 13983945 - 2² = 13983941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13983897 and 13983906.

It is not an unprimeable number, because it can be changed into a prime (13983941) 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 63 ways as a sum of consecutive naturals, for example, 229215 + ... + 229275.

It is an arithmetic number, because the mean of its divisors is an integer number (401760).

Almost surely, 2^13983945 is an apocalyptic number.

13983945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13983945 is a deficient number, since it is larger than the sum of its proper divisors (11728695).

13983945 is a wasteful number, since it uses less digits than its factorization.

13983945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its digits is 116640, while the sum is 42.

The square root of 13983945 is about 3739.5113317117. The cubic root of 13983945 is about 240.9220606198.

The spelling of 13983945 in words is "thirteen million, nine hundred eighty-three thousand, nine hundred forty-five".