13940547 has 16 divisors (see below), whose sum is σ = 19680000. Its totient is φ = 8753184.

The previous prime is 13940543. The next prime is 13940567. The reversal of 13940547 is 74504931.

It is not a de Polignac number, because 13940547 - 2² = 13940543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13940543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10729 + ... + 11957.

It is an arithmetic number, because the mean of its divisors is an integer number (1230000).

Almost surely, 2^13940547 is an apocalyptic number.

13940547 is a deficient number, since it is larger than the sum of its proper divisors (5739453).

13940547 is a wasteful number, since it uses less digits than its factorization.

13940547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 13940547 is about 3733.7041928894. The cubic root of 13940547 is about 240.6725752223.

The spelling of 13940547 in words is "thirteen million, nine hundred forty thousand, five hundred forty-seven".