44071645 has 8 divisors (see below), whose sum is σ = 53093304. Its totient is φ = 35119104.

The previous prime is 44071639. The next prime is 44071661. The reversal of 44071645 is 54617044.

It can be written as a sum of positive squares in 4 ways, for example, as 28366276 + 15705369 = 5326^2 + 3963^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 44071645 - 2¹⁵ = 44038877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15864 + ... + 18433.

It is an arithmetic number, because the mean of its divisors is an integer number (6636663).

Almost surely, 2^44071645 is an apocalyptic number.

It is an amenable number.

44071645 is a deficient number, since it is larger than the sum of its proper divisors (9021659).

44071645 is a wasteful number, since it uses less digits than its factorization.

44071645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 44071645 is about 6638.6478291893. The cubic root of 44071645 is about 353.2263446296.

Adding to 44071645 its reverse (54617044), we get a palindrome (98688689).

The spelling of 44071645 in words is "forty-four million, seventy-one thousand, six hundred forty-five".