144937739 has 4 divisors (see below), whose sum is σ = 145292520. Its totient is φ = 144582960.

The previous prime is 144937717. The next prime is 144937781. The reversal of 144937739 is 937739441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144937739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144937693 and 144937702.

It is not an unprimeable number, because it can be changed into a prime (144937439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176777 + ... + 177594.

It is an arithmetic number, because the mean of its divisors is an integer number (36323130).

Almost surely, 2^144937739 is an apocalyptic number.

144937739 is a deficient number, since it is larger than the sum of its proper divisors (354781).

144937739 is an equidigital number, since it uses as much as digits as its factorization.

144937739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354780.

The product of its digits is 571536, while the sum is 47.

The square root of 144937739 is about 12039.0090539047. The cubic root of 144937739 is about 525.2835825453.

The spelling of 144937739 in words is "one hundred forty-four million, nine hundred thirty-seven thousand, seven hundred thirty-nine".