44443643 has 2 divisors, whose sum is σ = 44443644. Its totient is φ = 44443642.

The previous prime is 44443621. The next prime is 44443669. The reversal of 44443643 is 34634444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44443643 - 2⁸ = 44443387 is a prime.

It is a super-2 number, since 2×44443643² = 3950474806222898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (44443673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22221821 + 22221822.

It is an arithmetic number, because the mean of its divisors is an integer number (22221822).

Almost surely, 2^44443643 is an apocalyptic number.

44443643 is a deficient number, since it is larger than the sum of its proper divisors (1).

44443643 is an equidigital number, since it uses as much as digits as its factorization.

44443643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 32.

The square root of 44443643 is about 6666.6065580624. The cubic root of 44443643 is about 354.2173938936.

The spelling of 44443643 in words is "forty-four million, four hundred forty-three thousand, six hundred forty-three".