1319387 has 4 divisors (see below), whose sum is σ = 1397016. Its totient is φ = 1241760.

The previous prime is 1319377. The next prime is 1319389. The reversal of 1319387 is 7839131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1319387 - 2⁴ = 1319371 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38789 + ... + 38822.

It is an arithmetic number, because the mean of its divisors is an integer number (349254).

2^1319387 is an apocalyptic number.

1319387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1319387 is a deficient number, since it is larger than the sum of its proper divisors (77629).

1319387 is an equidigital number, since it uses as much as digits as its factorization.

1319387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77628.

The product of its digits is 4536, while the sum is 32.

The square root of 1319387 is about 1148.6457243206. The cubic root of 1319387 is about 109.6791476799.

The spelling of 1319387 in words is "one million, three hundred nineteen thousand, three hundred eighty-seven".