13427905 has 4 divisors (see below), whose sum is σ = 16113492. Its totient is φ = 10742320.

The previous prime is 13427863. The next prime is 13427917. The reversal of 13427905 is 50972431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50972431 = 4783 ⋅10657.

It can be written as a sum of positive squares in 2 ways, for example, as 9878449 + 3549456 = 3143^2 + 1884^2 .

It is not a de Polignac number, because 13427905 - 2¹³ = 13419713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1342786 + ... + 1342795.

It is an arithmetic number, because the mean of its divisors is an integer number (4028373).

Almost surely, 2^13427905 is an apocalyptic number.

It is an amenable number.

13427905 is a deficient number, since it is larger than the sum of its proper divisors (2685587).

13427905 is an equidigital number, since it uses as much as digits as its factorization.

13427905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685586.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13427905 is about 3664.4105938063. The cubic root of 13427905 is about 237.6855355386.

The spelling of 13427905 in words is "thirteen million, four hundred twenty-seven thousand, nine hundred five".