1223989296 has 20 divisors (see below), whose sum is σ = 3161972472. Its totient is φ = 407996416.

The previous prime is 1223989289. The next prime is 1223989301. The reversal of 1223989296 is 6929893221.

It is a happy 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, 12749841 + ... + 12749936.

Almost surely, 2^1223989296 is an apocalyptic number.

1223989296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223989296 is an abundant number, since it is smaller than the sum of its proper divisors (1937983176).

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

1223989296 is a wasteful number, since it uses less digits than its factorization.

1223989296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25499788 (or 25499782 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 1223989296 is about 34985.5583919994. The cubic root of 1223989296 is about 1069.6931300393.

The spelling of 1223989296 in words is "one billion, two hundred twenty-three million, nine hundred eighty-nine thousand, two hundred ninety-six".