44236813 has 2 divisors, whose sum is σ = 44236814. Its totient is φ = 44236812.

The previous prime is 44236811. The next prime is 44236837. The reversal of 44236813 is 31863244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28697449 + 15539364 = 5357^2 + 3942^2 .

It is a cyclic number.

It is not a de Polignac number, because 44236813 - 2¹ = 44236811 is a prime.

Together with 44236811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44236811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22118406 + 22118407.

It is an arithmetic number, because the mean of its divisors is an integer number (22118407).

Almost surely, 2^44236813 is an apocalyptic number.

It is an amenable number.

44236813 is a deficient number, since it is larger than the sum of its proper divisors (1).

44236813 is an equidigital number, since it uses as much as digits as its factorization.

44236813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 44236813 is about 6651.0760783500. The cubic root of 44236813 is about 353.6670585139.

It can be divided in two parts, 4423 and 6813, that added together give a square (11236 = 106²).

The spelling of 44236813 in words is "forty-four million, two hundred thirty-six thousand, eight hundred thirteen".