1003390 has 16 divisors (see below), whose sum is σ = 1901520. Its totient is φ = 380160.

The previous prime is 1003381. The next prime is 1003397. The reversal of 1003390 is 933001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2451 + ... + 2830.

It is an arithmetic number, because the mean of its divisors is an integer number (118845).

2^1003390 is an apocalyptic number.

1003390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1003390 is a deficient number, since it is larger than the sum of its proper divisors (898130).

1003390 is a wasteful number, since it uses less digits than its factorization.

1003390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 1003390 is about 1001.6935659172. The cubic root of 1003390 is about 100.1128725499.

Adding to 1003390 its reverse (933001), we get a palindrome (1936391).

It can be divided in two parts, 1003 and 390, that multiplied together give a triangular number (391170 = T₈₈₄).

The spelling of 1003390 in words is "one million, three thousand, three hundred ninety".