144400345 has 4 divisors (see below), whose sum is σ = 173280420. Its totient is φ = 115520272.

The previous prime is 144400339. The next prime is 144400349. The reversal of 144400345 is 543004441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27846729 + 116553616 = 5277^2 + 10796^2 .

It is a cyclic number.

It is not a de Polignac number, because 144400345 - 2³ = 144400337 is a prime.

It is a super-2 number, since 2×144400345² = 41702919272238050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144400349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14440030 + ... + 14440039.

It is an arithmetic number, because the mean of its divisors is an integer number (43320105).

Almost surely, 2^144400345 is an apocalyptic number.

It is an amenable number.

144400345 is a deficient number, since it is larger than the sum of its proper divisors (28880075).

144400345 is an equidigital number, since it uses as much as digits as its factorization.

144400345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28880074.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144400345 is about 12016.6694637075. The cubic root of 144400345 is about 524.6335704586.

Adding to 144400345 its reverse (543004441), we get a palindrome (687404786).

The spelling of 144400345 in words is "one hundred forty-four million, four hundred thousand, three hundred forty-five".