20234402939 has 2 divisors, whose sum is σ = 20234402940. Its totient is φ = 20234402938.

The previous prime is 20234402897. The next prime is 20234402989. The reversal of 20234402939 is 93920443202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20234402939 - 2²⁰ = 20233354363 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20234402989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117201469 + 10117201470.

It is an arithmetic number, because the mean of its divisors is an integer number (10117201470).

Almost surely, 2^20234402939 is an apocalyptic number.

20234402939 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234402939 is an equidigital number, since it uses as much as digits as its factorization.

20234402939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 20234402939 in words is "twenty billion, two hundred thirty-four million, four hundred two thousand, nine hundred thirty-nine".