1427929871 has 2 divisors, whose sum is σ = 1427929872. Its totient is φ = 1427929870.

The previous prime is 1427929847. The next prime is 1427929913. The reversal of 1427929871 is 1789297241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1427929871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427929801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713964935 + 713964936.

It is an arithmetic number, because the mean of its divisors is an integer number (713964936).

Almost surely, 2^1427929871 is an apocalyptic number.

1427929871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427929871 is an equidigital number, since it uses as much as digits as its factorization.

1427929871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 50.

The square root of 1427929871 is about 37787.9593389217. The cubic root of 1427929871 is about 1126.0792595329.

The spelling of 1427929871 in words is "one billion, four hundred twenty-seven million, nine hundred twenty-nine thousand, eight hundred seventy-one".