389913213 has 4 divisors (see below), whose sum is σ = 519884288. Its totient is φ = 259942140.

The previous prime is 389913211. The next prime is 389913229. The reversal of 389913213 is 312319983.

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 not a de Polignac number, because 389913213 - 2¹ = 389913211 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 (389913211) 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, 64985533 + ... + 64985538.

It is an arithmetic number, because the mean of its divisors is an integer number (129971072).

Almost surely, 2^389913213 is an apocalyptic number.

It is an amenable number.

389913213 is a deficient number, since it is larger than the sum of its proper divisors (129971075).

389913213 is a wasteful number, since it uses less digits than its factorization.

389913213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129971074.

The product of its digits is 34992, while the sum is 39.

The square root of 389913213 is about 19746.2202205891. The cubic root of 389913213 is about 730.5601586608.

The spelling of 389913213 in words is "three hundred eighty-nine million, nine hundred thirteen thousand, two hundred thirteen".