384499253 has 4 divisors (see below), whose sum is σ = 384584268. Its totient is φ = 384414240.

The previous prime is 384499207. The next prime is 384499261. The reversal of 384499253 is 352994483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352994483 = 19 ⋅18578657.

It can be written as a sum of positive squares in 2 ways, for example, as 266277124 + 118222129 = 16318^2 + 10873^2 .

It is a cyclic number.

It is not a de Polignac number, because 384499253 - 2¹⁴ = 384482869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384499198 and 384499207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384499853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35318 + ... + 44903.

It is an arithmetic number, because the mean of its divisors is an integer number (96146067).

Almost surely, 2^384499253 is an apocalyptic number.

It is an amenable number.

384499253 is a deficient number, since it is larger than the sum of its proper divisors (85015).

384499253 is an equidigital number, since it uses as much as digits as its factorization.

384499253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85014.

The product of its digits is 933120, while the sum is 47.

The square root of 384499253 is about 19608.6525034231. The cubic root of 384499253 is about 727.1631017259.

The spelling of 384499253 in words is "three hundred eighty-four million, four hundred ninety-nine thousand, two hundred fifty-three".