13940871 has 16 divisors (see below), whose sum is σ = 21484800. Its totient is φ = 7875648.

The previous prime is 13940869. The next prime is 13940873. The reversal of 13940871 is 17804931.

13940871 = T₄₀₆ + T₄₀₇ + ... + T₅₃₁.

13940871 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13940869) and next prime (13940873).

It is not a de Polignac number, because 13940871 - 2¹ = 13940869 is a prime.

13940871 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13940873) 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, 1861 + ... + 5598.

It is an arithmetic number, because the mean of its divisors is an integer number (1342800).

Almost surely, 2^13940871 is an apocalyptic number.

13940871 is a deficient number, since it is larger than the sum of its proper divisors (7543929).

13940871 is an equidigital number, since it uses as much as digits as its factorization.

13940871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558.

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

The square root of 13940871 is about 3733.7475811844. The cubic root of 13940871 is about 240.6744397428.

The spelling of 13940871 in words is "thirteen million, nine hundred forty thousand, eight hundred seventy-one".