8949059581 has 48 divisors (see below), whose sum is σ = 12103188480. Its totient is φ = 6527764320.

The previous prime is 8949059579. The next prime is 8949059591. The reversal of 8949059581 is 1859509498.

It is not a de Polignac number, because 8949059581 - 2¹ = 8949059579 is a prime.

It is a super-2 number, since 2×8949059581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8949059591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 574980 + ... + 590338.

It is an arithmetic number, because the mean of its divisors is an integer number (252149760).

Almost surely, 2^8949059581 is an apocalyptic number.

It is an amenable number.

8949059581 is a deficient number, since it is larger than the sum of its proper divisors (3154128899).

8949059581 is a wasteful number, since it uses less digits than its factorization.

8949059581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15454 (or 15447 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 58.

The square root of 8949059581 is about 94599.4692426971. The cubic root of 8949059581 is about 2076.1519383855.

The spelling of 8949059581 in words is "eight billion, nine hundred forty-nine million, fifty-nine thousand, five hundred eighty-one".