395639650 has 48 divisors (see below), whose sum is σ = 847535040. Its totient is φ = 134596800.

The previous prime is 395639617. The next prime is 395639653. The reversal of 395639650 is 56936593.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 395639650.

It is not an unprimeable number, because it can be changed into a prime (395639653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41536 + ... + 50164.

It is an arithmetic number, because the mean of its divisors is an integer number (17656980).

Almost surely, 2^395639650 is an apocalyptic number.

395639650 is an abundant number, since it is smaller than the sum of its proper divisors (451895390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395639650 is a wasteful number, since it uses less digits than its factorization.

395639650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8779 (or 8774 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 46.

The square root of 395639650 is about 19890.6925470181. The cubic root of 395639650 is about 734.1192343676.

The spelling of 395639650 in words is "three hundred ninety-five million, six hundred thirty-nine thousand, six hundred fifty".