4443043642 has 4 divisors (see below), whose sum is σ = 6664565466. Its totient is φ = 2221521820.

The previous prime is 4443043639. The next prime is 4443043651. The reversal of 4443043642 is 2463403444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4344259921 + 98783721 = 65911^2 + 9939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4443043598 and 4443043607.

It is an unprimeable number.

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, 1110760909 + ... + 1110760912.

Almost surely, 2^4443043642 is an apocalyptic number.

4443043642 is a deficient number, since it is larger than the sum of its proper divisors (2221521824).

4443043642 is a wasteful number, since it uses less digits than its factorization.

4443043642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221521823.

The product of its (nonzero) digits is 110592, while the sum is 34.

The square root of 4443043642 is about 66656.1598203797. The cubic root of 4443043642 is about 1643.9686309412.

The spelling of 4443043642 in words is "four billion, four hundred forty-three million, forty-three thousand, six hundred forty-two".