13940543 has 2 divisors, whose sum is σ = 13940544. Its totient is φ = 13940542.

The previous prime is 13940539. The next prime is 13940567. The reversal of 13940543 is 34504931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13940543 - 2² = 13940539 is a prime.

It is equal to p₉₀₆₅₂₇ and since 13940543 and 906527 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13945543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970271 + 6970272.

It is an arithmetic number, because the mean of its divisors is an integer number (6970272).

Almost surely, 2^13940543 is an apocalyptic number.

13940543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13940543 is an equidigital number, since it uses as much as digits as its factorization.

13940543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 13940543 is about 3733.7036572283. The cubic root of 13940543 is about 240.6725522033.

The spelling of 13940543 in words is "thirteen million, nine hundred forty thousand, five hundred forty-three".