427867571939 has 2 divisors, whose sum is σ = 427867571940. Its totient is φ = 427867571938.

The previous prime is 427867571867. The next prime is 427867571977. The reversal of 427867571939 is 939175768724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427867571939 is a prime.

It is not a weakly prime, because it can be changed into another prime (427867570939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213933785969 + 213933785970.

It is an arithmetic number, because the mean of its divisors is an integer number (213933785970).

Almost surely, 2^427867571939 is an apocalyptic number.

427867571939 is a deficient number, since it is larger than the sum of its proper divisors (1).

427867571939 is an equidigital number, since it uses as much as digits as its factorization.

427867571939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160030080, while the sum is 68.

The spelling of 427867571939 in words is "four hundred twenty-seven billion, eight hundred sixty-seven million, five hundred seventy-one thousand, nine hundred thirty-nine".