4434441561 has 24 divisors (see below), whose sum is σ = 7291417536. Its totient is φ = 2570689440.

The previous prime is 4434441541. The next prime is 4434441617. The reversal of 4434441561 is 1651444344.

It is not a de Polignac number, because 4434441561 - 2⁶ = 4434441497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4434441541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 971470 + ... + 976023.

It is an arithmetic number, because the mean of its divisors is an integer number (303809064).

Almost surely, 2^4434441561 is an apocalyptic number.

It is an amenable number.

4434441561 is a deficient number, since it is larger than the sum of its proper divisors (2856975975).

4434441561 is a wasteful number, since it uses less digits than its factorization.

4434441561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947533 (or 1947530 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 4434441561 is about 66591.6027814318. The cubic root of 4434441561 is about 1642.9069947688.

It can be divided in two parts, 44344 and 41561, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 4434441561 in words is "four billion, four hundred thirty-four million, four hundred forty-one thousand, five hundred sixty-one".