44621309 has 2 divisors, whose sum is σ = 44621310. Its totient is φ = 44621308.

The previous prime is 44621293. The next prime is 44621393. The reversal of 44621309 is 90312644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33895684 + 10725625 = 5822^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 44621309 - 2⁴ = 44621293 is a prime.

It is a super-2 number, since 2×44621309² = 3982122433746962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44621399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22310654 + 22310655.

It is an arithmetic number, because the mean of its divisors is an integer number (22310655).

Almost surely, 2^44621309 is an apocalyptic number.

It is an amenable number.

44621309 is a deficient number, since it is larger than the sum of its proper divisors (1).

44621309 is an equidigital number, since it uses as much as digits as its factorization.

44621309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 44621309 is about 6679.9183378242. The cubic root of 44621309 is about 354.6887677534.

The spelling of 44621309 in words is "forty-four million, six hundred twenty-one thousand, three hundred nine".