1229616897 has 16 divisors (see below), whose sum is σ = 1666663680. Its totient is φ = 806197392.

The previous prime is 1229616889. The next prime is 1229616917. The reversal of 1229616897 is 7986169221.

It is not a de Polignac number, because 1229616897 - 2³ = 1229616889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1229616847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127818 + ... + 137100.

It is an arithmetic number, because the mean of its divisors is an integer number (104166480).

Almost surely, 2^1229616897 is an apocalyptic number.

It is an amenable number.

1229616897 is a deficient number, since it is larger than the sum of its proper divisors (437046783).

1229616897 is an equidigital number, since it uses as much as digits as its factorization.

1229616897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its digits is 653184, while the sum is 51.

The square root of 1229616897 is about 35065.8936432540. The cubic root of 1229616897 is about 1071.3300190165.

The spelling of 1229616897 in words is "one billion, two hundred twenty-nine million, six hundred sixteen thousand, eight hundred ninety-seven".