44613013 has 4 divisors (see below), whose sum is σ = 45054828. Its totient is φ = 44171200.

The previous prime is 44612983. The next prime is 44613017. The reversal of 44613013 is 31031644.

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 39917124 + 4695889 = 6318^2 + 2167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44613013 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44613017) 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, 220756 + ... + 220957.

It is an arithmetic number, because the mean of its divisors is an integer number (11263707).

Almost surely, 2^44613013 is an apocalyptic number.

It is an amenable number.

44613013 is a deficient number, since it is larger than the sum of its proper divisors (441815).

44613013 is a wasteful number, since it uses less digits than its factorization.

44613013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441814.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 44613013 is about 6679.2973432839. The cubic root of 44613013 is about 354.6667851293. Note that the first 3 decimals are identical.

Adding to 44613013 its reverse (31031644), we get a palindrome (75644657).

The spelling of 44613013 in words is "forty-four million, six hundred thirteen thousand, thirteen".