44768813 has 4 divisors (see below), whose sum is σ = 44964540. Its totient is φ = 44573088.

The previous prime is 44768809. The next prime is 44768821. The reversal of 44768813 is 31886744.

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 24581764 + 20187049 = 4958^2 + 4493^2 .

It is a cyclic number.

It is not a de Polignac number, because 44768813 - 2² = 44768809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44768413) 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, 97520 + ... + 97977.

It is an arithmetic number, because the mean of its divisors is an integer number (11241135).

Almost surely, 2^44768813 is an apocalyptic number.

It is an amenable number.

44768813 is a deficient number, since it is larger than the sum of its proper divisors (195727).

44768813 is a wasteful number, since it uses less digits than its factorization.

44768813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195726.

The product of its digits is 129024, while the sum is 41.

The square root of 44768813 is about 6690.9500820138. The cubic root of 44768813 is about 355.0791676905.

The spelling of 44768813 in words is "forty-four million, seven hundred sixty-eight thousand, eight hundred thirteen".