13940563 has 16 divisors (see below), whose sum is σ = 17248000. Its totient is φ = 10971936.

The previous prime is 13940543. The next prime is 13940567. The reversal of 13940563 is 36504931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13940563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13940567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27688 + ... + 28186.

It is an arithmetic number, because the mean of its divisors is an integer number (1078000).

Almost surely, 2^13940563 is an apocalyptic number.

13940563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13940563 is a deficient number, since it is larger than the sum of its proper divisors (3307437).

13940563 is a wasteful number, since it uses less digits than its factorization.

13940563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 13940563 is about 3733.7063355331. The cubic root of 13940563 is about 240.6726672980.

The spelling of 13940563 in words is "thirteen million, nine hundred forty thousand, five hundred sixty-three".