13005394 has 4 divisors (see below), whose sum is σ = 19508094. Its totient is φ = 6502696.

The previous prime is 13005371. The next prime is 13005397. The reversal of 13005394 is 49350031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49350031 = 17 ⋅2902943.

It can be written as a sum of positive squares in only one way, i.e., 12341169 + 664225 = 3513^2 + 815^2 .

It is not an unprimeable number, because it can be changed into a prime (13005397) 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 as a sum of consecutive naturals, namely, 3251347 + ... + 3251350.

Almost surely, 2^13005394 is an apocalyptic number.

13005394 is a deficient number, since it is larger than the sum of its proper divisors (6502700).

13005394 is an equidigital number, since it uses as much as digits as its factorization.

13005394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6502699.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13005394 is about 3606.2992111027. The cubic root of 13005394 is about 235.1659850427.

The spelling of 13005394 in words is "thirteen million, five thousand, three hundred ninety-four".