1122784399 has 8 divisors (see below), whose sum is σ = 1278110592. Its totient is φ = 976334040.

The previous prime is 1122784393. The next prime is 1122784417. The reversal of 1122784399 is 9934872211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1122784399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122784393) 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, 2218689 + ... + 2219194.

It is an arithmetic number, because the mean of its divisors is an integer number (159763824).

Almost surely, 2^1122784399 is an apocalyptic number.

1122784399 is a deficient number, since it is larger than the sum of its proper divisors (155326193).

1122784399 is a wasteful number, since it uses less digits than its factorization.

1122784399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437917.

The product of its digits is 217728, while the sum is 46.

The square root of 1122784399 is about 33507.9751551776. The cubic root of 1122784399 is about 1039.3587019609.

The spelling of 1122784399 in words is "one billion, one hundred twenty-two million, seven hundred eighty-four thousand, three hundred ninety-nine".