1224279649 has 8 divisors (see below), whose sum is σ = 1289443040. Its totient is φ = 1159189056.

The previous prime is 1224279647. The next prime is 1224279659. The reversal of 1224279649 is 9469724221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1224279649 - 2¹ = 1224279647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224279599 and 1224279608.

It is not an unprimeable number, because it can be changed into a prime (1224279647) 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 7 ways as a sum of consecutive naturals, for example, 18217 + ... + 52729.

It is an arithmetic number, because the mean of its divisors is an integer number (161180380).

Almost surely, 2^1224279649 is an apocalyptic number.

1224279649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1224279649 is a deficient number, since it is larger than the sum of its proper divisors (65163391).

1224279649 is a wasteful number, since it uses less digits than its factorization.

1224279649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36399.

The product of its digits is 435456, while the sum is 46.

The square root of 1224279649 is about 34989.7077581394. The cubic root of 1224279649 is about 1069.7777070462. Note that the first 4 decimals are identical.

The spelling of 1224279649 in words is "one billion, two hundred twenty-four million, two hundred seventy-nine thousand, six hundred forty-nine".