389222679 has 4 divisors (see below), whose sum is σ = 518963576. Its totient is φ = 259481784.

The previous prime is 389222623. The next prime is 389222719. The reversal of 389222679 is 976222983.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 389222679 - 2⁸ = 389222423 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389222179) 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, 64870444 + ... + 64870449.

It is an arithmetic number, because the mean of its divisors is an integer number (129740894).

Almost surely, 2^389222679 is an apocalyptic number.

389222679 is a deficient number, since it is larger than the sum of its proper divisors (129740897).

389222679 is a wasteful number, since it uses less digits than its factorization.

389222679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129740896.

The product of its digits is 653184, while the sum is 48.

The square root of 389222679 is about 19728.7272524104. The cubic root of 389222679 is about 730.1286312392.

The spelling of 389222679 in words is "three hundred eighty-nine million, two hundred twenty-two thousand, six hundred seventy-nine".