389780956 has 6 divisors (see below), whose sum is σ = 682116680. Its totient is φ = 194890476.

The previous prime is 389780899. The next prime is 389780959. The reversal of 389780956 is 659087983.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 389780897 and 389780906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389780959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48722616 + ... + 48722623.

Almost surely, 2^389780956 is an apocalyptic number.

It is an amenable number.

389780956 is a deficient number, since it is larger than the sum of its proper divisors (292335724).

389780956 is a wasteful number, since it uses less digits than its factorization.

389780956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97445243 (or 97445241 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 389780956 is about 19742.8710171545. The cubic root of 389780956 is about 730.4775482932.

The spelling of 389780956 in words is "three hundred eighty-nine million, seven hundred eighty thousand, nine hundred fifty-six".