389653249 has 4 divisors (see below), whose sum is σ = 390353364. Its totient is φ = 388953136.

The previous prime is 389653247. The next prime is 389653259. The reversal of 389653249 is 942356983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942356983 = 599 ⋅1573217.

It can be written as a sum of positive squares in 2 ways, for example, as 69422224 + 320231025 = 8332^2 + 17895^2 .

It is a cyclic number.

It is not a de Polignac number, because 389653249 - 2¹ = 389653247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389653247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349222 + ... + 350335.

It is an arithmetic number, because the mean of its divisors is an integer number (97588341).

Almost surely, 2^389653249 is an apocalyptic number.

It is an amenable number.

389653249 is a deficient number, since it is larger than the sum of its proper divisors (700115).

389653249 is an equidigital number, since it uses as much as digits as its factorization.

389653249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700114.

The product of its digits is 1399680, while the sum is 49.

The square root of 389653249 is about 19739.6364961465. The cubic root of 389653249 is about 730.3977622110.

The spelling of 389653249 in words is "three hundred eighty-nine million, six hundred fifty-three thousand, two hundred forty-nine".