144899957 has 2 divisors, whose sum is σ = 144899958. Its totient is φ = 144899956.

The previous prime is 144899917. The next prime is 144899969. The reversal of 144899957 is 759998441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 34880836 = 10489^2 + 5906^2 .

It is an emirp because it is prime and its reverse (759998441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144899957 - 2²⁶ = 77791093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144899917) 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 as a sum of consecutive naturals, namely, 72449978 + 72449979.

It is an arithmetic number, because the mean of its divisors is an integer number (72449979).

Almost surely, 2^144899957 is an apocalyptic number.

It is an amenable number.

144899957 is a deficient number, since it is larger than the sum of its proper divisors (1).

144899957 is an equidigital number, since it uses as much as digits as its factorization.

144899957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 56.

The square root of 144899957 is about 12037.4398025494. The cubic root of 144899957 is about 525.2379353840.

The spelling of 144899957 in words is "one hundred forty-four million, eight hundred ninety-nine thousand, nine hundred fifty-seven".