1222849408 has 64 divisors (see below), whose sum is σ = 2729556720. Its totient is φ = 540794880.

The previous prime is 1222849387. The next prime is 1222849417. The reversal of 1222849408 is 8049482221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40360 + ... + 63832.

Almost surely, 2^1222849408 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 1222849408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364778360).

1222849408 is an abundant number, since it is smaller than the sum of its proper divisors (1506707312).

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

1222849408 is a wasteful number, since it uses less digits than its factorization.

1222849408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535 (or 23523 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 1222849408 is about 34969.2637611946. The cubic root of 1222849408 is about 1069.3609623537.

The spelling of 1222849408 in words is "one billion, two hundred twenty-two million, eight hundred forty-nine thousand, four hundred eight".