44442613 has 2 divisors, whose sum is σ = 44442614. Its totient is φ = 44442612.

The previous prime is 44442611. The next prime is 44442649. The reversal of 44442613 is 31624444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41049649 + 3392964 = 6407^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 44442613 - 2¹ = 44442611 is a prime.

Together with 44442611, 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 (44442611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22221306 + 22221307.

It is an arithmetic number, because the mean of its divisors is an integer number (22221307).

Almost surely, 2^44442613 is an apocalyptic number.

It is an amenable number.

44442613 is a deficient number, since it is larger than the sum of its proper divisors (1).

44442613 is an equidigital number, since it uses as much as digits as its factorization.

44442613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 44442613 is about 6666.5293069183. The cubic root of 44442613 is about 354.2146574937.

The spelling of 44442613 in words is "forty-four million, four hundred forty-two thousand, six hundred thirteen".