285923147 has 2 divisors, whose sum is σ = 285923148. Its totient is φ = 285923146.

The previous prime is 285923129. The next prime is 285923149. The reversal of 285923147 is 741329582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285923147 - 2⁶ = 285923083 is a prime.

Together with 285923149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285923149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142961573 + 142961574.

It is an arithmetic number, because the mean of its divisors is an integer number (142961574).

Almost surely, 2^285923147 is an apocalyptic number.

285923147 is a deficient number, since it is larger than the sum of its proper divisors (1).

285923147 is an equidigital number, since it uses as much as digits as its factorization.

285923147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 285923147 is about 16909.2621660438. The cubic root of 285923147 is about 658.7942071926.

The spelling of 285923147 in words is "two hundred eighty-five million, nine hundred twenty-three thousand, one hundred forty-seven".