1388484403 has 4 divisors (see below), whose sum is σ = 1388807440. Its totient is φ = 1388161368.

The previous prime is 1388484397. The next prime is 1388484431. The reversal of 1388484403 is 3044848831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3044848831 = 21493 ⋅141667.

It is a cyclic number.

It is not a de Polignac number, because 1388484403 - 2⁵ = 1388484371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1388484403.

It is not an unprimeable number, because it can be changed into a prime (1388484443) 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, 154983 + ... + 163696.

It is an arithmetic number, because the mean of its divisors is an integer number (347201860).

Almost surely, 2^1388484403 is an apocalyptic number.

1388484403 is a deficient number, since it is larger than the sum of its proper divisors (323037).

1388484403 is an equidigital number, since it uses as much as digits as its factorization.

1388484403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323036.

The product of its (nonzero) digits is 294912, while the sum is 43.

The square root of 1388484403 is about 37262.3724821703. The cubic root of 1388484403 is about 1115.6132624814.

The spelling of 1388484403 in words is "one billion, three hundred eighty-eight million, four hundred eighty-four thousand, four hundred three".