20449226939 has 8 divisors (see below), whose sum is σ = 20681963280. Its totient is φ = 20217652000.

The previous prime is 20449226923. The next prime is 20449226971. The reversal of 20449226939 is 93962294402.

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 20449226939 - 2⁴ = 20449226923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20449226839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254912 + ... + 325389.

It is an arithmetic number, because the mean of its divisors is an integer number (2585245410).

Almost surely, 2^20449226939 is an apocalyptic number.

20449226939 is a deficient number, since it is larger than the sum of its proper divisors (232736341).

20449226939 is a wasteful number, since it uses less digits than its factorization.

20449226939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580701.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 20449226939 in words is "twenty billion, four hundred forty-nine million, two hundred twenty-six thousand, nine hundred thirty-nine".