9219797408 has 48 divisors (see below), whose sum is σ = 19247808384. Its totient is φ = 4332272640.

The previous prime is 9219797407. The next prime is 9219797449. The reversal of 9219797408 is 8047979129.

It is not an unprimeable number, because it can be changed into a prime (9219797407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363641 + ... + 388167.

It is an arithmetic number, because the mean of its divisors is an integer number (400996008).

Almost surely, 2^9219797408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9219797408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9623904192).

9219797408 is an abundant number, since it is smaller than the sum of its proper divisors (10028010976).

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

9219797408 is a wasteful number, since it uses less digits than its factorization.

9219797408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25245 (or 25237 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 56.

The square root of 9219797408 is about 96019.7761297119. The cubic root of 9219797408 is about 2096.8810394920.

The spelling of 9219797408 in words is "nine billion, two hundred nineteen million, seven hundred ninety-seven thousand, four hundred eight".