44645749 has 2 divisors, whose sum is σ = 44645750. Its totient is φ = 44645748.

The previous prime is 44645747. The next prime is 44645753. The reversal of 44645749 is 94754644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36844900 + 7800849 = 6070^2 + 2793^2 .

It is a cyclic number.

It is not a de Polignac number, because 44645749 - 2¹ = 44645747 is a prime.

It is a super-3 number, since 3×44645749³ (a number of 24 digits) contains 333 as substring.

Together with 44645747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44645747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22322874 + 22322875.

It is an arithmetic number, because the mean of its divisors is an integer number (22322875).

Almost surely, 2^44645749 is an apocalyptic number.

It is an amenable number.

44645749 is a deficient number, since it is larger than the sum of its proper divisors (1).

44645749 is an equidigital number, since it uses as much as digits as its factorization.

44645749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 44645749 is about 6681.7474510789. The cubic root of 44645749 is about 354.7535126889.

The spelling of 44645749 in words is "forty-four million, six hundred forty-five thousand, seven hundred forty-nine".