650839388 has 6 divisors (see below), whose sum is σ = 1138968936. Its totient is φ = 325419692.

The previous prime is 650839381. The next prime is 650839391. The reversal of 650839388 is 883938056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650839381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81354920 + ... + 81354927.

It is an arithmetic number, because the mean of its divisors is an integer number (189828156).

Almost surely, 2^650839388 is an apocalyptic number.

It is an amenable number.

650839388 is a deficient number, since it is larger than the sum of its proper divisors (488129548).

650839388 is a wasteful number, since it uses less digits than its factorization.

650839388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162709851 (or 162709849 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 650839388 is about 25511.5540098991. The cubic root of 650839388 is about 866.6118222362.

The spelling of 650839388 in words is "six hundred fifty million, eight hundred thirty-nine thousand, three hundred eighty-eight".