9911794450 has 24 divisors (see below), whose sum is σ = 18498886308. Its totient is φ = 3951180480.

The previous prime is 9911794411. The next prime is 9911794483. The reversal of 9911794450 is 544971199.

It can be written as a sum of positive squares in 6 ways, for example, as 6847397001 + 3064397449 = 82749^2 + 55357^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9911794394 and 9911794403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323637 + ... + 352936.

Almost surely, 2^9911794450 is an apocalyptic number.

9911794450 is a deficient number, since it is larger than the sum of its proper divisors (8587091858).

9911794450 is a wasteful number, since it uses less digits than its factorization.

9911794450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676878 (or 676873 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 9911794450 is about 99557.9954097108. The cubic root of 9911794450 is about 2148.0815372519.

The spelling of 9911794450 in words is "nine billion, nine hundred eleven million, seven hundred ninety-four thousand, four hundred fifty".