1427284989 has 64 divisors (see below), whose sum is σ = 2373638400. Its totient is φ = 842382720.

The previous prime is 1427284951. The next prime is 1427284993. The reversal of 1427284989 is 9894827241.

1427284989 is a `hidden beast` number, since 142 + 7 + 2 + 8 + 498 + 9 = 666.

It is not a de Polignac number, because 1427284989 - 2²¹ = 1425187837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427284949) 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 in 63 ways as a sum of consecutive naturals, for example, 24191242 + ... + 24191300.

It is an arithmetic number, because the mean of its divisors is an integer number (37088100).

Almost surely, 2^1427284989 is an apocalyptic number.

It is an amenable number.

1427284989 is a deficient number, since it is larger than the sum of its proper divisors (946353411).

1427284989 is an frugal number, since it uses more digits than its factorization.

1427284989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 116 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 1427284989 is about 37779.4254720741. The cubic root of 1427284989 is about 1125.9097139533.

The spelling of 1427284989 in words is "one billion, four hundred twenty-seven million, two hundred eighty-four thousand, nine hundred eighty-nine".