20323229439 has 8 divisors (see below), whose sum is σ = 27674184960. Its totient is φ = 13260546776.

The previous prime is 20323229429. The next prime is 20323229441. The reversal of 20323229439 is 93492232302.

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 20323229439 - 2⁸ = 20323229183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323229397 and 20323229406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323229429) 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, 72068049 + ... + 72068330.

It is an arithmetic number, because the mean of its divisors is an integer number (3459273120).

Almost surely, 2^20323229439 is an apocalyptic number.

20323229439 is a deficient number, since it is larger than the sum of its proper divisors (7350955521).

20323229439 is a wasteful number, since it uses less digits than its factorization.

20323229439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144136429.

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 20323229439 in words is "twenty billion, three hundred twenty-three million, two hundred twenty-nine thousand, four hundred thirty-nine".