285314639 has 2 divisors, whose sum is σ = 285314640. Its totient is φ = 285314638.

The previous prime is 285314573. The next prime is 285314641. The reversal of 285314639 is 936413582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285314639 - 2²⁸ = 16879183 is a prime.

Together with 285314641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 285314596 and 285314605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285317639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142657319 + 142657320.

It is an arithmetic number, because the mean of its divisors is an integer number (142657320).

Almost surely, 2^285314639 is an apocalyptic number.

285314639 is a deficient number, since it is larger than the sum of its proper divisors (1).

285314639 is an equidigital number, since it uses as much as digits as its factorization.

285314639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 285314639 is about 16891.2592484989. The cubic root of 285314639 is about 658.3265217619.

The spelling of 285314639 in words is "two hundred eighty-five million, three hundred fourteen thousand, six hundred thirty-nine".