389226478 has 8 divisors (see below), whose sum is σ = 584076240. Its totient is φ = 194534400.

The previous prime is 389226463. The next prime is 389226479. The reversal of 389226478 is 874622983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389226479) 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, 33043 + ... + 43246.

It is an arithmetic number, because the mean of its divisors is an integer number (73009530).

Almost surely, 2^389226478 is an apocalyptic number.

389226478 is a deficient number, since it is larger than the sum of its proper divisors (194849762).

389226478 is a wasteful number, since it uses less digits than its factorization.

389226478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78842.

The product of its digits is 1161216, while the sum is 49.

The square root of 389226478 is about 19728.8235330949. The cubic root of 389226478 is about 730.1310067000.

The spelling of 389226478 in words is "three hundred eighty-nine million, two hundred twenty-six thousand, four hundred seventy-eight".