4401957561 has 12 divisors (see below), whose sum is σ = 6064719696. Its totient is φ = 2839970760.

The previous prime is 4401957529. The next prime is 4401957607. The reversal of 4401957561 is 1657591044.

It is not a de Polignac number, because 4401957561 - 2⁵ = 4401957529 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4401957061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 760551 + ... + 766316.

It is an arithmetic number, because the mean of its divisors is an integer number (505393308).

Almost surely, 2^4401957561 is an apocalyptic number.

It is an amenable number.

4401957561 is a deficient number, since it is larger than the sum of its proper divisors (1662762135).

4401957561 is a wasteful number, since it uses less digits than its factorization.

4401957561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526932 (or 1526901 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 4401957561 is about 66347.2498375027. The cubic root of 4401957561 is about 1638.8855159847.

The spelling of 4401957561 in words is "four billion, four hundred one million, nine hundred fifty-seven thousand, five hundred sixty-one".