1090403 has 2 divisors, whose sum is σ = 1090404. Its totient is φ = 1090402.

The previous prime is 1090387. The next prime is 1090409. The reversal of 1090403 is 3040901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1090403 - 2⁴ = 1090387 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1090409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545201 + 545202.

It is an arithmetic number, because the mean of its divisors is an integer number (545202).

2^1090403 is an apocalyptic number.

1090403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090403 is an equidigital number, since it uses as much as digits as its factorization.

1090403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1090403 is about 1044.2236350514. The cubic root of 1090403 is about 102.9269284098.

The spelling of 1090403 in words is "one million, ninety thousand, four hundred three".