384898221 has 12 divisors (see below), whose sum is σ = 556237500. Its totient is φ = 256472640.

The previous prime is 384898193. The next prime is 384898253. The reversal of 384898221 is 122898483.

It can be written as a sum of positive squares in 2 ways, for example, as 239816196 + 145082025 = 15486^2 + 12045^2 .

It is not a de Polignac number, because 384898221 - 2¹³ = 384890029 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384898021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11155 + ... + 29903.

It is an arithmetic number, because the mean of its divisors is an integer number (46353125).

Almost surely, 2^384898221 is an apocalyptic number.

It is an amenable number.

384898221 is a deficient number, since it is larger than the sum of its proper divisors (171339279).

384898221 is a wasteful number, since it uses less digits than its factorization.

384898221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036 (or 21033 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 384898221 is about 19618.8231298414. The cubic root of 384898221 is about 727.4145235601.

The spelling of 384898221 in words is "three hundred eighty-four million, eight hundred ninety-eight thousand, two hundred twenty-one".