985403 has 2 divisors, whose sum is σ = 985404. Its totient is φ = 985402.

The previous prime is 985399. The next prime is 985417. The reversal of 985403 is 304589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 985403 - 2² = 985399 is a prime.

It is equal to p₇₇₄₄₇ and since 985403 and 77447 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (985433) 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 as a sum of consecutive naturals, namely, 492701 + 492702.

It is an arithmetic number, because the mean of its divisors is an integer number (492702).

2⁹⁸⁵⁴⁰³ is an apocalyptic number.

985403 is a deficient number, since it is larger than the sum of its proper divisors (1).

985403 is an equidigital number, since it uses as much as digits as its factorization.

985403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 985403 is about 992.6746697685. The cubic root of 985403 is about 99.5110464744.

The spelling of 985403 in words is "nine hundred eighty-five thousand, four hundred three".