12953845 has 4 divisors (see below), whose sum is σ = 15544620. Its totient is φ = 10363072.

The previous prime is 12953821. The next prime is 12953869. The reversal of 12953845 is 54835921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12953821) and next prime (12953869).

It can be written as a sum of positive squares in 2 ways, for example, as 3845521 + 9108324 = 1961^2 + 3018^2 .

It is a cyclic number.

It is not a de Polignac number, because 12953845 - 2⁹ = 12953333 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1295380 + ... + 1295389.

It is an arithmetic number, because the mean of its divisors is an integer number (3886155).

Almost surely, 2^12953845 is an apocalyptic number.

It is an amenable number.

12953845 is a deficient number, since it is larger than the sum of its proper divisors (2590775).

12953845 is an equidigital number, since it uses as much as digits as its factorization.

12953845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590774.

The product of its digits is 43200, while the sum is 37.

The square root of 12953845 is about 3599.1450373665. The cubic root of 12953845 is about 234.8548673807.

The spelling of 12953845 in words is "twelve million, nine hundred fifty-three thousand, eight hundred forty-five".