13940817 has 16 divisors (see below), whose sum is σ = 20348928. Its totient is φ = 8419280.

The previous prime is 13940809. The next prime is 13940827. The reversal of 13940817 is 71804931.

It is a cyclic number.

It is not a de Polignac number, because 13940817 - 2³ = 13940809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13940827) 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, 12088 + ... + 13190.

It is an arithmetic number, because the mean of its divisors is an integer number (1271808).

Almost surely, 2^13940817 is an apocalyptic number.

It is an amenable number.

13940817 is a deficient number, since it is larger than the sum of its proper divisors (6408111).

13940817 is a wasteful number, since it uses less digits than its factorization.

13940817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 13940817 is about 3733.7403498369. The cubic root of 13940817 is about 240.6741289914.

The spelling of 13940817 in words is "thirteen million, nine hundred forty thousand, eight hundred seventeen".