13940806 has 16 divisors (see below), whose sum is σ = 23804928. Its totient is φ = 6061000.

The previous prime is 13940803. The next prime is 13940809. The reversal of 13940806 is 60804931.

It is an interprime number because it is at equal distance from previous prime (13940803) and next prime (13940809).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13940803) 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 7 ways as a sum of consecutive naturals, for example, 13270 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (1487808).

Almost surely, 2^13940806 is an apocalyptic number.

13940806 is a deficient number, since it is larger than the sum of its proper divisors (9864122).

13940806 is a wasteful number, since it uses less digits than its factorization.

13940806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27587.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 13940806 is about 3733.7388767829. The cubic root of 13940806 is about 240.6740656901.

The spelling of 13940806 in words is "thirteen million, nine hundred forty thousand, eight hundred six".