1388259 has 24 divisors (see below), whose sum is σ = 2162160. Its totient is φ = 889056.

The previous prime is 1388243. The next prime is 1388269. The reversal of 1388259 is 9528831.

It is not a de Polignac number, because 1388259 - 2⁴ = 1388243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1388269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6949 + ... + 7145.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2^1388259 is an apocalyptic number.

1388259 is a deficient number, since it is larger than the sum of its proper divisors (773901).

1388259 is an equidigital number, since it uses as much as digits as its factorization.

1388259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 229 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1388259 is about 1178.2440324483. The cubic root of 1388259 is about 111.5552890615. Note that the first 3 decimals are identical.

The spelling of 1388259 in words is "one million, three hundred eighty-eight thousand, two hundred fifty-nine".