1229809894 has 16 divisors (see below), whose sum is σ = 1854173520. Its totient is φ = 611759520.

The previous prime is 1229809879. The next prime is 1229809901. The reversal of 1229809894 is 4989089221.

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, 467904 + ... + 470524.

It is an arithmetic number, because the mean of its divisors is an integer number (115885845).

Almost surely, 2^1229809894 is an apocalyptic number.

1229809894 is a deficient number, since it is larger than the sum of its proper divisors (624363626).

1229809894 is a wasteful number, since it uses less digits than its factorization.

1229809894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1229809894 is about 35068.6454543086. The cubic root of 1229809894 is about 1071.3860670055.

The spelling of 1229809894 in words is "one billion, two hundred twenty-nine million, eight hundred nine thousand, eight hundred ninety-four".