284772149 has 4 divisors (see below), whose sum is σ = 284939340. Its totient is φ = 284604960.

The previous prime is 284772139. The next prime is 284772157. The reversal of 284772149 is 941277482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 249071524 + 35700625 = 15782^2 + 5975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-284772149 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 (284772109) 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, 81014 + ... + 84455.

It is an arithmetic number, because the mean of its divisors is an integer number (71234835).

Almost surely, 2^284772149 is an apocalyptic number.

It is an amenable number.

284772149 is a deficient number, since it is larger than the sum of its proper divisors (167191).

284772149 is a wasteful number, since it uses less digits than its factorization.

284772149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167190.

The product of its digits is 225792, while the sum is 44.

The square root of 284772149 is about 16875.1933025966. The cubic root of 284772149 is about 657.9090152680.

The spelling of 284772149 in words is "two hundred eighty-four million, seven hundred seventy-two thousand, one hundred forty-nine".