1339387 has 4 divisors (see below), whose sum is σ = 1530736. Its totient is φ = 1148040.

The previous prime is 1339381. The next prime is 1339391. The reversal of 1339387 is 7839331.

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 1339387 - 2⁷ = 1339259 is a prime.

It is a Duffinian number.

1339387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1339381) 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, 95664 + ... + 95677.

It is an arithmetic number, because the mean of its divisors is an integer number (382684).

2^1339387 is an apocalyptic number.

1339387 is a deficient number, since it is larger than the sum of its proper divisors (191349).

1339387 is an equidigital number, since it uses as much as digits as its factorization.

1339387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191348.

The product of its digits is 13608, while the sum is 34.

The square root of 1339387 is about 1157.3188843184. The cubic root of 1339387 is about 110.2305632270.

The spelling of 1339387 in words is "one million, three hundred thirty-nine thousand, three hundred eighty-seven".