1388499 has 16 divisors (see below), whose sum is σ = 2174208. Its totient is φ = 771552.

The previous prime is 1388483. The next prime is 1388587. The reversal of 1388499 is 9948831.

1388499 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 1388499 - 2⁴ = 1388483 is a prime.

1388499 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1388499.

It is not an unprimeable number, because it can be changed into a prime (1388419) 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 15 ways as a sum of consecutive naturals, for example, 117 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (135888).

2^1388499 is an apocalyptic number.

1388499 is a deficient number, since it is larger than the sum of its proper divisors (785709).

1388499 is a wasteful number, since it uses less digits than its factorization.

1388499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its digits is 62208, while the sum is 42.

The square root of 1388499 is about 1178.3458745207. The cubic root of 1388499 is about 111.5617171912.

The spelling of 1388499 in words is "one million, three hundred eighty-eight thousand, four hundred ninety-nine".