13850005 has 16 divisors (see below), whose sum is σ = 18338544. Its totient is φ = 9976320.

The previous prime is 13849991. The next prime is 13850009. The reversal of 13850005 is 50005831.

It can be written as a sum of positive squares in 8 ways, for example, as 4028049 + 9821956 = 2007^2 + 3134^2 .

It is not a de Polignac number, because 13850005 - 2¹¹ = 13847957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13850009) 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, 67 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (1146159).

Almost surely, 2^13850005 is an apocalyptic number.

It is an amenable number.

13850005 is a deficient number, since it is larger than the sum of its proper divisors (4488539).

13850005 is a wasteful number, since it uses less digits than its factorization.

13850005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 13850005 is about 3721.5594849471. The cubic root of 13850005 is about 240.1503976308.

Adding to 13850005 its reverse (50005831), we get a palindrome (63855836).

The spelling of 13850005 in words is "thirteen million, eight hundred fifty thousand, five".