13941009 has 12 divisors (see below), whose sum is σ = 20169396. Its totient is φ = 9279072.

The previous prime is 13941007. The next prime is 13941019. The reversal of 13941009 is 90014931.

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 9828225 = 2028^2 + 3135^2 .

It is not a de Polignac number, because 13941009 - 2¹ = 13941007 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13941007) 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 11 ways as a sum of consecutive naturals, for example, 10279 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (1680783).

Almost surely, 2^13941009 is an apocalyptic number.

It is an amenable number.

13941009 is a deficient number, since it is larger than the sum of its proper divisors (6228387).

13941009 is a wasteful number, since it uses less digits than its factorization.

13941009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13941009 is about 3733.7660612309. The cubic root of 13941009 is about 240.6752338817.

The spelling of 13941009 in words is "thirteen million, nine hundred forty-one thousand, nine".