20430339929 has 2 divisors, whose sum is σ = 20430339930. Its totient is φ = 20430339928.

The previous prime is 20430339871. The next prime is 20430340001. The reversal of 20430339929 is 92993303402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19726764304 + 703575625 = 140452^2 + 26525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430339929 is a prime.

It is a super-3 number, since 3×20430339929³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 20430339929.

It is not a weakly prime, because it can be changed into another prime (20430332929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215169964 + 10215169965.

It is an arithmetic number, because the mean of its divisors is an integer number (10215169965).

Almost surely, 2^20430339929 is an apocalyptic number.

It is an amenable number.

20430339929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430339929 is an equidigital number, since it uses as much as digits as its factorization.

20430339929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 20430339929 in words is "twenty billion, four hundred thirty million, three hundred thirty-nine thousand, nine hundred twenty-nine".