1226789406 has 12 divisors (see below), whose sum is σ = 2658043752. Its totient is φ = 408929796.

The previous prime is 1226789351. The next prime is 1226789437. The reversal of 1226789406 is 6049876221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34077466 + ... + 34077501.

It is an arithmetic number, because the mean of its divisors is an integer number (221503646).

Almost surely, 2^1226789406 is an apocalyptic number.

1226789406 is an abundant number, since it is smaller than the sum of its proper divisors (1431254346).

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

1226789406 is a wasteful number, since it uses less digits than its factorization.

1226789406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68154975 (or 68154972 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1226789406 is about 35025.5536144684. The cubic root of 1226789406 is about 1070.5082181185.

The spelling of 1226789406 in words is "one billion, two hundred twenty-six million, seven hundred eighty-nine thousand, four hundred six".