1287474089 has 16 divisors (see below), whose sum is σ = 1458725760. Its totient is φ = 1125970560.

The previous prime is 1287474079. The next prime is 1287474091. The reversal of 1287474089 is 9804747821.

It is not a de Polignac number, because 1287474089 - 2⁸ = 1287473833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1287474049) 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 15 ways as a sum of consecutive naturals, for example, 18452 + ... + 53994.

It is an arithmetic number, because the mean of its divisors is an integer number (91170360).

Almost surely, 2^1287474089 is an apocalyptic number.

It is an amenable number.

1287474089 is a deficient number, since it is larger than the sum of its proper divisors (171251671).

1287474089 is a wasteful number, since it uses less digits than its factorization.

1287474089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35680.

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 1287474089 is about 35881.3891732190. The cubic root of 1287474089 is about 1087.8762590065.

The spelling of 1287474089 in words is "one billion, two hundred eighty-seven million, four hundred seventy-four thousand, eighty-nine".