11439445 has 8 divisors (see below), whose sum is σ = 13755960. Its totient is φ = 9132480.

The previous prime is 11439443. The next prime is 11439457. The reversal of 11439445 is 54493411.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 7447441 = 1998^2 + 2729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11439445 - 2¹ = 11439443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11439443) 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 7 ways as a sum of consecutive naturals, for example, 591 + ... + 4819.

It is an arithmetic number, because the mean of its divisors is an integer number (1719495).

Almost surely, 2^11439445 is an apocalyptic number.

It is an amenable number.

11439445 is a deficient number, since it is larger than the sum of its proper divisors (2316515).

11439445 is an equidigital number, since it uses as much as digits as its factorization.

11439445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775.

The product of its digits is 8640, while the sum is 31.

The square root of 11439445 is about 3382.2248594675. The cubic root of 11439445 is about 225.3209904093.

The spelling of 11439445 in words is "eleven million, four hundred thirty-nine thousand, four hundred forty-five".