544653749 has 2 divisors, whose sum is σ = 544653750. Its totient is φ = 544653748.

The previous prime is 544653673. The next prime is 544653751. The reversal of 544653749 is 947356445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513928900 + 30724849 = 22670^2 + 5543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544653749 is a prime.

Together with 544653751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544653149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272326874 + 272326875.

It is an arithmetic number, because the mean of its divisors is an integer number (272326875).

Almost surely, 2^544653749 is an apocalyptic number.

It is an amenable number.

544653749 is a deficient number, since it is larger than the sum of its proper divisors (1).

544653749 is an equidigital number, since it uses as much as digits as its factorization.

544653749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 47.

The square root of 544653749 is about 23337.8179999759. The cubic root of 544653749 is about 816.6578965785.

It can be divided in two parts, 5446 and 53749, that added together give a palindrome (59195).

The spelling of 544653749 in words is "five hundred forty-four million, six hundred fifty-three thousand, seven hundred forty-nine".