1390033 has 4 divisors (see below), whose sum is σ = 1394788. Its totient is φ = 1385280.

The previous prime is 1390027. The next prime is 1390043. The reversal of 1390033 is 3300931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3300931 = 659 ⋅5009.

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 1203409 = 432^2 + 1097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390033 is a prime.

It is a Duffinian number.

1390033 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1390003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1908 + ... + 2533.

It is an arithmetic number, because the mean of its divisors is an integer number (348697).

2^1390033 is an apocalyptic number.

It is an amenable number.

1390033 is a deficient number, since it is larger than the sum of its proper divisors (4755).

1390033 is an equidigital number, since it uses as much as digits as its factorization.

1390033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 1390033 is about 1178.9966072894. The cubic root of 1390033 is about 111.6027861656.

Adding to 1390033 its reverse (3300931), we get a palindrome (4690964).

The spelling of 1390033 in words is "one million, three hundred ninety thousand, thirty-three".