285904141 has 2 divisors, whose sum is σ = 285904142. Its totient is φ = 285904140.

The previous prime is 285904123. The next prime is 285904189. The reversal of 285904141 is 141409582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146168100 + 139736041 = 12090^2 + 11821^2 .

It is a cyclic number.

It is not a de Polignac number, because 285904141 - 2¹⁵ = 285871373 is a prime.

It is a super-3 number, since 3×285904141³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 285904097 and 285904106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285904121) 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, 142952070 + 142952071.

It is an arithmetic number, because the mean of its divisors is an integer number (142952071).

Almost surely, 2^285904141 is an apocalyptic number.

It is an amenable number.

285904141 is a deficient number, since it is larger than the sum of its proper divisors (1).

285904141 is an equidigital number, since it uses as much as digits as its factorization.

285904141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 285904141 is about 16908.7001570198. The cubic root of 285904141 is about 658.7796096568.

The spelling of 285904141 in words is "two hundred eighty-five million, nine hundred four thousand, one hundred forty-one".