389299273 has 4 divisors (see below), whose sum is σ = 424690128. Its totient is φ = 353908420.

The previous prime is 389299259. The next prime is 389299289. The reversal of 389299273 is 372992983.

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 389299273 - 2⁹ = 389298761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389299273.

It is not an unprimeable number, because it can be changed into a prime (389299373) 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, 17695411 + ... + 17695432.

It is an arithmetic number, because the mean of its divisors is an integer number (106172532).

Almost surely, 2^389299273 is an apocalyptic number.

It is an amenable number.

389299273 is a deficient number, since it is larger than the sum of its proper divisors (35390855).

389299273 is a wasteful number, since it uses less digits than its factorization.

389299273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35390854.

The product of its digits is 1469664, while the sum is 52.

The square root of 389299273 is about 19730.6683363742. The cubic root of 389299273 is about 730.1765213952.

The spelling of 389299273 in words is "three hundred eighty-nine million, two hundred ninety-nine thousand, two hundred seventy-three".