1388033 has 4 divisors (see below), whose sum is σ = 1469700. Its totient is φ = 1306368.

The previous prime is 1388029. The next prime is 1388041. The reversal of 1388033 is 3308831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3308831 = 19 ⋅174149.

It can be written as a sum of positive squares in 2 ways, for example, as 1129969 + 258064 = 1063^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388033 - 2² = 1388029 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1387993 and 1388011.

It is not an unprimeable number, because it can be changed into a prime (1388003) 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, 40808 + ... + 40841.

It is an arithmetic number, because the mean of its divisors is an integer number (367425).

2^1388033 is an apocalyptic number.

It is an amenable number.

1388033 is a deficient number, since it is larger than the sum of its proper divisors (81667).

1388033 is an equidigital number, since it uses as much as digits as its factorization.

1388033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81666.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1388033 is about 1178.1481231153. The cubic root of 1388033 is about 111.5492352287.

The spelling of 1388033 in words is "one million, three hundred eighty-eight thousand, thirty-three".