1229445276 has 12 divisors (see below), whose sum is σ = 2868705672. Its totient is φ = 409815088.

The previous prime is 1229445263. The next prime is 1229445299. The reversal of 1229445276 is 6725449221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51226875 + ... + 51226898.

It is an arithmetic number, because the mean of its divisors is an integer number (239058806).

Almost surely, 2^1229445276 is an apocalyptic number.

It is an amenable number.

1229445276 is an abundant number, since it is smaller than the sum of its proper divisors (1639260396).

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

1229445276 is a wasteful number, since it uses less digits than its factorization.

1229445276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102453780 (or 102453778 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 1229445276 is about 35063.4464364244. The cubic root of 1229445276 is about 1071.2801738752.

The spelling of 1229445276 in words is "one billion, two hundred twenty-nine million, four hundred forty-five thousand, two hundred seventy-six".