1387259 has 2 divisors, whose sum is σ = 1387260. Its totient is φ = 1387258.

The previous prime is 1387231. The next prime is 1387261. The reversal of 1387259 is 9527831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1387259 - 2²⁰ = 338683 is a prime.

Together with 1387261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1387289) 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 as a sum of consecutive naturals, namely, 693629 + 693630.

It is an arithmetic number, because the mean of its divisors is an integer number (693630).

2^1387259 is an apocalyptic number.

1387259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387259 is an equidigital number, since it uses as much as digits as its factorization.

1387259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 1387259 is about 1177.8195956937. The cubic root of 1387259 is about 111.5284972104.

It can be divided in two parts, 13872 and 59, that added together give a palindrome (13931).

The spelling of 1387259 in words is "one million, three hundred eighty-seven thousand, two hundred fifty-nine".