389623970 has 8 divisors (see below), whose sum is σ = 701323164. Its totient is φ = 155849584.

The previous prime is 389623967. The next prime is 389623987. The reversal of 389623970 is 79326983.

It can be written as a sum of positive squares in 2 ways, for example, as 379041961 + 10582009 = 19469^2 + 3253^2 .

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

It is a Curzon number.

It is an unprimeable number.

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, 19481189 + ... + 19481208.

Almost surely, 2^389623970 is an apocalyptic number.

389623970 is a deficient number, since it is larger than the sum of its proper divisors (311699194).

389623970 is a wasteful number, since it uses less digits than its factorization.

389623970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38962404.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 389623970 is about 19738.8948525494. The cubic root of 389623970 is about 730.3794674393.

The spelling of 389623970 in words is "three hundred eighty-nine million, six hundred twenty-three thousand, nine hundred seventy".