1387464289 has 8 divisors (see below), whose sum is σ = 1394932392. Its totient is φ = 1380015360.

The previous prime is 1387464283. The next prime is 1387464293. The reversal of 1387464289 is 9824647831.

It can be written as a sum of positive squares in 4 ways, for example, as 750760000 + 636704289 = 27400^2 + 25233^2 .

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 1387464289 - 2¹⁹ = 1386940001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387464283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154137 + ... + 162889.

It is an arithmetic number, because the mean of its divisors is an integer number (174366549).

Almost surely, 2^1387464289 is an apocalyptic number.

It is an amenable number.

1387464289 is a deficient number, since it is larger than the sum of its proper divisors (7468103).

1387464289 is an equidigital number, since it uses as much as digits as its factorization.

1387464289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9587.

The product of its digits is 2322432, while the sum is 52.

The square root of 1387464289 is about 37248.6817082162. The cubic root of 1387464289 is about 1115.3399833274.

The spelling of 1387464289 in words is "one billion, three hundred eighty-seven million, four hundred sixty-four thousand, two hundred eighty-nine".