44747749 has 4 divisors (see below), whose sum is σ = 45209164. Its totient is φ = 44286336.

The previous prime is 44747711. The next prime is 44747753. The reversal of 44747749 is 94774744.

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 9345249 + 35402500 = 3057^2 + 5950^2 .

It is a cyclic number.

It is not a de Polignac number, because 44747749 - 2⁹ = 44747237 is a prime.

It is a super-2 number, since 2×44747749² = 4004722081134002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44747699 and 44747708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44747779) 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, 230562 + ... + 230755.

It is an arithmetic number, because the mean of its divisors is an integer number (11302291).

Almost surely, 2^44747749 is an apocalyptic number.

It is an amenable number.

44747749 is a deficient number, since it is larger than the sum of its proper divisors (461415).

44747749 is an equidigital number, since it uses as much as digits as its factorization.

44747749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461414.

The product of its digits is 790272, while the sum is 46.

The square root of 44747749 is about 6689.3758303746. The cubic root of 44747749 is about 355.0234699817.

The spelling of 44747749 in words is "forty-four million, seven hundred forty-seven thousand, seven hundred forty-nine".