284923649 has 4 divisors (see below), whose sum is σ = 285219264. Its totient is φ = 284628036.

The previous prime is 284923631. The next prime is 284923669. The reversal of 284923649 is 946329482.

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 284923649 - 2¹² = 284919553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284923669) 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, 146357 + ... + 148290.

It is an arithmetic number, because the mean of its divisors is an integer number (71304816).

Almost surely, 2^284923649 is an apocalyptic number.

It is an amenable number.

284923649 is a deficient number, since it is larger than the sum of its proper divisors (295615).

284923649 is an equidigital number, since it uses as much as digits as its factorization.

284923649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295614.

The product of its digits is 746496, while the sum is 47.

The square root of 284923649 is about 16879.6815432045. The cubic root of 284923649 is about 658.0256647202.

The spelling of 284923649 in words is "two hundred eighty-four million, nine hundred twenty-three thousand, six hundred forty-nine".