8917039950 has 288 divisors, whose sum is σ = 28267333632. Its totient is φ = 1819584000.

The previous prime is 8917039949. The next prime is 8917039969. The reversal of 8917039950 is 599307198.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8917039893 and 8917039902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5500140 + ... + 5501760.

It is an arithmetic number, because the mean of its divisors is an integer number (98150464).

Almost surely, 2^8917039950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8917039950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14133666816).

8917039950 is an abundant number, since it is smaller than the sum of its proper divisors (19350293682).

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

8917039950 is a wasteful number, since it uses less digits than its factorization.

8917039950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 8917039950 is about 94430.0796886246. The cubic root of 8917039950 is about 2073.6728301348.

The spelling of 8917039950 in words is "eight billion, nine hundred seventeen million, thirty-nine thousand, nine hundred fifty".