1224539994 has 16 divisors (see below), whose sum is σ = 2457924768. Its totient is φ = 406705872.

The previous prime is 1224539957. The next prime is 1224539999. The reversal of 1224539994 is 4999354221.

It is not an unprimeable number, because it can be changed into a prime (1224539999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366732 + ... + 370055.

It is an arithmetic number, because the mean of its divisors is an integer number (153620298).

Almost surely, 2^1224539994 is an apocalyptic number.

1224539994 is an abundant number, since it is smaller than the sum of its proper divisors (1233384774).

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

1224539994 is a wasteful number, since it uses less digits than its factorization.

1224539994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737069.

The product of its digits is 699840, while the sum is 48.

The square root of 1224539994 is about 34993.4278686727. The cubic root of 1224539994 is about 1069.8535316444.

The spelling of 1224539994 in words is "one billion, two hundred twenty-four million, five hundred thirty-nine thousand, nine hundred ninety-four".