285091403 has 2 divisors, whose sum is σ = 285091404. Its totient is φ = 285091402.

The previous prime is 285091393. The next prime is 285091421. The reversal of 285091403 is 304190582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285091403 - 2¹⁴ = 285075019 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285091403.

It is not a weakly prime, because it can be changed into another prime (285091423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142545701 + 142545702.

It is an arithmetic number, because the mean of its divisors is an integer number (142545702).

Almost surely, 2^285091403 is an apocalyptic number.

285091403 is a deficient number, since it is larger than the sum of its proper divisors (1).

285091403 is an equidigital number, since it uses as much as digits as its factorization.

285091403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 285091403 is about 16884.6499223407. The cubic root of 285091403 is about 658.1547809247.

The spelling of 285091403 in words is "two hundred eighty-five million, ninety-one thousand, four hundred three".