285973297 has 4 divisors (see below), whose sum is σ = 286770240. Its totient is φ = 285176356.

The previous prime is 285973291. The next prime is 285973301. The reversal of 285973297 is 792379582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 792379582 = 2 ⋅396189791.

It is a cyclic number.

It is not a de Polignac number, because 285973297 - 2¹⁹ = 285449009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285973291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397933 + ... + 398650.

It is an arithmetic number, because the mean of its divisors is an integer number (71692560).

Almost surely, 2^285973297 is an apocalyptic number.

It is an amenable number.

285973297 is a deficient number, since it is larger than the sum of its proper divisors (796943).

285973297 is an equidigital number, since it uses as much as digits as its factorization.

285973297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796942.

The product of its digits is 1905120, while the sum is 52.

The square root of 285973297 is about 16910.7450161133. The cubic root of 285973297 is about 658.8327217356.

The spelling of 285973297 in words is "two hundred eighty-five million, nine hundred seventy-three thousand, two hundred ninety-seven".