144867845 has 8 divisors (see below), whose sum is σ = 174102264. Its totient is φ = 115720384.

The previous prime is 144867841. The next prime is 144867859. The reversal of 144867845 is 548768441.

It can be written as a sum of positive squares in 4 ways, for example, as 99480676 + 45387169 = 9974^2 + 6737^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 144867845 - 2² = 144867841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144867845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144867841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18014 + ... + 24783.

It is an arithmetic number, because the mean of its divisors is an integer number (21762783).

Almost surely, 2^144867845 is an apocalyptic number.

It is an amenable number.

144867845 is a deficient number, since it is larger than the sum of its proper divisors (29234419).

144867845 is an equidigital number, since it uses as much as digits as its factorization.

144867845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43479.

The product of its digits is 860160, while the sum is 47.

The square root of 144867845 is about 12036.1058901955. The cubic root of 144867845 is about 525.1991323206.

The spelling of 144867845 in words is "one hundred forty-four million, eight hundred sixty-seven thousand, eight hundred forty-five".