44749021 has 8 divisors (see below), whose sum is σ = 46272600. Its totient is φ = 43242048.

The previous prime is 44748973. The next prime is 44749037. The reversal of 44749021 is 12094744.

It can be written as a sum of positive squares in 4 ways, for example, as 15912121 + 28836900 = 3989^2 + 5370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-44749021 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 (44749721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 9571.

It is an arithmetic number, because the mean of its divisors is an integer number (5784075).

Almost surely, 2^44749021 is an apocalyptic number.

It is an amenable number.

44749021 is a deficient number, since it is larger than the sum of its proper divisors (1523579).

44749021 is a wasteful number, since it uses less digits than its factorization.

44749021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 44749021 is about 6689.4709058340. The cubic root of 44749021 is about 355.0268339169.

The spelling of 44749021 in words is "forty-four million, seven hundred forty-nine thousand, twenty-one".