144557939 has 2 divisors, whose sum is σ = 144557940. Its totient is φ = 144557938.

The previous prime is 144557911. The next prime is 144557971. The reversal of 144557939 is 939755441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144557939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 144557893 and 144557902.

It is not a weakly prime, because it can be changed into another prime (144557989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72278969 + 72278970.

It is an arithmetic number, because the mean of its divisors is an integer number (72278970).

Almost surely, 2^144557939 is an apocalyptic number.

144557939 is a deficient number, since it is larger than the sum of its proper divisors (1).

144557939 is an equidigital number, since it uses as much as digits as its factorization.

144557939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 144557939 is about 12023.2249833395. The cubic root of 144557939 is about 524.8243572681.

The spelling of 144557939 in words is "one hundred forty-four million, five hundred fifty-seven thousand, nine hundred thirty-nine".