9449217900 has 216 divisors, whose sum is σ = 30773499120. Its totient is φ = 2422264320.

The previous prime is 9449217863. The next prime is 9449217923. The reversal of 9449217900 is 97129449.

It is a happy number.

9449217900 is a `hidden beast` number, since 94 + 492 + 1 + 79 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7229047 + ... + 7230353.

Almost surely, 2^9449217900 is an apocalyptic number.

9449217900 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9449217900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15386749560).

9449217900 is an abundant number, since it is smaller than the sum of its proper divisors (21324281220).

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

9449217900 is a wasteful number, since it uses less digits than its factorization.

9449217900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9449217900 is about 97207.0877045496. The cubic root of 9449217900 is about 2114.1312932237.

The spelling of 9449217900 in words is "nine billion, four hundred forty-nine million, two hundred seventeen thousand, nine hundred".