1224442989 has 48 divisors (see below), whose sum is σ = 2242506240. Its totient is φ = 625272480.

The previous prime is 1224442987. The next prime is 1224442993. The reversal of 1224442989 is 9892444221.

1224442989 is a `hidden beast` number, since 122 + 4 + 442 + 9 + 89 = 666.

1224442989 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1224442989 - 2¹ = 1224442987 is a prime.

It is a super-2 number, since 2×1224442989² = 2998521266622508242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224442987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25914 + ... + 55860.

It is an arithmetic number, because the mean of its divisors is an integer number (46718880).

Almost surely, 2^1224442989 is an apocalyptic number.

It is an amenable number.

1224442989 is a deficient number, since it is larger than the sum of its proper divisors (1018063251).

1224442989 is a wasteful number, since it uses less digits than its factorization.

1224442989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30030 (or 30027 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1224442989 is about 34992.0417952425. The cubic root of 1224442989 is about 1069.8252805235.

The spelling of 1224442989 in words is "one billion, two hundred twenty-four million, four hundred forty-two thousand, nine hundred eighty-nine".