44936681 has 4 divisors (see below), whose sum is σ = 45569664. Its totient is φ = 44303700.

The previous prime is 44936669. The next prime is 44936777. The reversal of 44936681 is 18663944.

Added to its reverse (18663944) it gives a square (63600625 = 7975²).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44936681 is a prime.

It is a super-2 number, since 2×44936681² = 4038610598591522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44936651) 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, 316385 + ... + 316526.

It is an arithmetic number, because the mean of its divisors is an integer number (11392416).

Almost surely, 2^44936681 is an apocalyptic number.

It is an amenable number.

44936681 is a deficient number, since it is larger than the sum of its proper divisors (632983).

44936681 is an equidigital number, since it uses as much as digits as its factorization.

44936681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632982.

The product of its digits is 124416, while the sum is 41.

The square root of 44936681 is about 6703.4827515255. The cubic root of 44936681 is about 355.5224233052.

Adding to 44936681 its reverse (18663944), we get a square (63600625 = 7975²).

The spelling of 44936681 in words is "forty-four million, nine hundred thirty-six thousand, six hundred eighty-one".