8949559542 has 192 divisors, whose sum is σ = 23166259200. Its totient is φ = 2255235840.

The previous prime is 8949559537. The next prime is 8949559547. The reversal of 8949559542 is 2459559498.

It is an interprime number because it is at equal distance from previous prime (8949559537) and next prime (8949559547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8949559547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40132443 + ... + 40132665.

It is an arithmetic number, because the mean of its divisors is an integer number (120657600).

Almost surely, 2^8949559542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8949559542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11583129600).

8949559542 is an abundant number, since it is smaller than the sum of its proper divisors (14216699658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8949559542 is a wasteful number, since it uses less digits than its factorization.

8949559542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 448 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 60.

The square root of 8949559542 is about 94602.1117206165. Note that the first 3 decimals coincide. The cubic root of 8949559542 is about 2076.1906007596.

The spelling of 8949559542 in words is "eight billion, nine hundred forty-nine million, five hundred fifty-nine thousand, five hundred forty-two".