144630749 has 4 divisors (see below), whose sum is σ = 144736860. Its totient is φ = 144524640.

The previous prime is 144630719. The next prime is 144630833. The reversal of 144630749 is 947036441.

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 114105124 + 30525625 = 10682^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 144630749 - 2²⁴ = 127853533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144630709) 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, 50984 + ... + 53745.

It is an arithmetic number, because the mean of its divisors is an integer number (36184215).

Almost surely, 2^144630749 is an apocalyptic number.

It is an amenable number.

144630749 is a deficient number, since it is larger than the sum of its proper divisors (106111).

144630749 is a wasteful number, since it uses less digits than its factorization.

144630749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106110.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 144630749 is about 12026.2524919444. The cubic root of 144630749 is about 524.9124558487.

The spelling of 144630749 in words is "one hundred forty-four million, six hundred thirty thousand, seven hundred forty-nine".