427939172039 has 2 divisors, whose sum is σ = 427939172040. Its totient is φ = 427939172038.

The previous prime is 427939172033. The next prime is 427939172071. The reversal of 427939172039 is 930271939724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427939172039 - 2²⁰ = 427938123463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427939172033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213969586019 + 213969586020.

It is an arithmetic number, because the mean of its divisors is an integer number (213969586020).

Almost surely, 2^427939172039 is an apocalyptic number.

427939172039 is a deficient number, since it is larger than the sum of its proper divisors (1).

427939172039 is an equidigital number, since it uses as much as digits as its factorization.

427939172039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 427939172039 in words is "four hundred twenty-seven billion, nine hundred thirty-nine million, one hundred seventy-two thousand, thirty-nine".