284581397 has 4 divisors (see below), whose sum is σ = 285930336. Its totient is φ = 283232460.

The previous prime is 284581351. The next prime is 284581477. The reversal of 284581397 is 793185482.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 284581397 - 2¹⁸ = 284319253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284580397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674153 + ... + 674574.

It is an arithmetic number, because the mean of its divisors is an integer number (71482584).

Almost surely, 2^284581397 is an apocalyptic number.

It is an amenable number.

284581397 is a deficient number, since it is larger than the sum of its proper divisors (1348939).

284581397 is a wasteful number, since it uses less digits than its factorization.

284581397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348938.

The product of its digits is 483840, while the sum is 47.

The square root of 284581397 is about 16869.5405094508. The cubic root of 284581397 is about 657.7620843592.

The spelling of 284581397 in words is "two hundred eighty-four million, five hundred eighty-one thousand, three hundred ninety-seven".