1224893989 has 4 divisors (see below), whose sum is σ = 1336248000. Its totient is φ = 1113539980.

The previous prime is 1224893977. The next prime is 1224894017. The reversal of 1224893989 is 9893984221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1224893989 - 2⁷ = 1224893861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224893939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55676989 + ... + 55677010.

It is an arithmetic number, because the mean of its divisors is an integer number (334062000).

Almost surely, 2^1224893989 is an apocalyptic number.

It is an amenable number.

1224893989 is a deficient number, since it is larger than the sum of its proper divisors (111354011).

1224893989 is a wasteful number, since it uses less digits than its factorization.

1224893989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111354010.

The product of its digits is 2239488, while the sum is 55.

The square root of 1224893989 is about 34998.4855243766. The cubic root of 1224893989 is about 1069.9566142481.

The spelling of 1224893989 in words is "one billion, two hundred twenty-four million, eight hundred ninety-three thousand, nine hundred eighty-nine".