9955450505 has 32 divisors (see below), whose sum is σ = 16040118528. Its totient is φ = 5728608000.

The previous prime is 9955450489. The next prime is 9955450511. The reversal of 9955450505 is 5050545599.

It is not a de Polignac number, because 9955450505 - 2⁴ = 9955450489 is a prime.

It is a super-2 number, since 2×9955450505² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 9955450505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 989546 + ... + 999555.

It is an arithmetic number, because the mean of its divisors is an integer number (501253704).

Almost surely, 2^9955450505 is an apocalyptic number.

It is an amenable number.

9955450505 is a deficient number, since it is larger than the sum of its proper divisors (6084668023).

9955450505 is a wasteful number, since it uses less digits than its factorization.

9955450505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989137.

The product of its (nonzero) digits is 1012500, while the sum is 47.

The square root of 9955450505 is about 99777.0038886717. The cubic root of 9955450505 is about 2151.2306280846.

The spelling of 9955450505 in words is "nine billion, nine hundred fifty-five million, four hundred fifty thousand, five hundred five".