389790650 has 12 divisors (see below), whose sum is σ = 725010702. Its totient is φ = 155916240.

The previous prime is 389790647. The next prime is 389790691. The reversal of 389790650 is 56097983.

It can be written as a sum of positive squares in 3 ways, for example, as 314743081 + 75047569 = 17741^2 + 8663^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 389790595 and 389790604.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3897857 + ... + 3897956.

Almost surely, 2^389790650 is an apocalyptic number.

389790650 is a deficient number, since it is larger than the sum of its proper divisors (335220052).

389790650 is a wasteful number, since it uses less digits than its factorization.

389790650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795825 (or 7795820 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 389790650 is about 19743.1165219679. The cubic root of 389790650 is about 730.4836039941.

The spelling of 389790650 in words is "three hundred eighty-nine million, seven hundred ninety thousand, six hundred fifty".