44947749 has 72 divisors (see below), whose sum is σ = 81076800. Its totient is φ = 22120560.

The previous prime is 44947741. The next prime is 44947753. The reversal of 44947749 is 94774944.

It is not a de Polignac number, because 44947749 - 2³ = 44947741 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

Its product of digits (1016064) is a multiple of the sum of its prime factors (84).

It is a junction number, because it is equal to n+sod(n) for n = 44947698 and 44947707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44947741) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2365662 + ... + 2365680.

Almost surely, 2^44947749 is an apocalyptic number.

44947749 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

44947749 is a deficient number, since it is larger than the sum of its proper divisors (36129051).

44947749 is a wasteful number, since it uses less digits than its factorization.

44947749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 40 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 44947749 is about 6704.3082417204. The cubic root of 44947749 is about 355.5516095518.

The spelling of 44947749 in words is "forty-four million, nine hundred forty-seven thousand, seven hundred forty-nine".