389617772 has 6 divisors (see below), whose sum is σ = 681831108. Its totient is φ = 194808884.

The previous prime is 389617757. The next prime is 389617777. The reversal of 389617772 is 277716983.

It is a self number, because there is not a number n which added to its sum of digits gives 389617772.

It is not an unprimeable number, because it can be changed into a prime (389617777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48702218 + ... + 48702225.

It is an arithmetic number, because the mean of its divisors is an integer number (113638518).

Almost surely, 2^389617772 is an apocalyptic number.

It is an amenable number.

389617772 is a deficient number, since it is larger than the sum of its proper divisors (292213336).

389617772 is a wasteful number, since it uses less digits than its factorization.

389617772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97404447 (or 97404445 counting only the distinct ones).

The product of its digits is 889056, while the sum is 50.

The square root of 389617772 is about 19738.7378522539. The cubic root of 389617772 is about 730.3755945462.

The spelling of 389617772 in words is "three hundred eighty-nine million, six hundred seventeen thousand, seven hundred seventy-two".