1387067009 has 8 divisors (see below), whose sum is σ = 1469419560. Its totient is φ = 1304798976.

The previous prime is 1387066999. The next prime is 1387067057. The reversal of 1387067009 is 9007607831.

It can be written as a sum of positive squares in 4 ways, for example, as 796819984 + 590247025 = 28228^2 + 24295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1387067009 - 2¹² = 1387062913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1387060009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14387 + ... + 54599.

It is an arithmetic number, because the mean of its divisors is an integer number (183677445).

Almost surely, 2^1387067009 is an apocalyptic number.

It is an amenable number.

1387067009 is a deficient number, since it is larger than the sum of its proper divisors (82352551).

1387067009 is a wasteful number, since it uses less digits than its factorization.

1387067009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42259.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1387067009 is about 37243.3485202392. The cubic root of 1387067009 is about 1115.2335194300.

The spelling of 1387067009 in words is "one billion, three hundred eighty-seven million, sixty-seven thousand, nine".