395216934 has 64 divisors (see below), whose sum is σ = 920125440. Its totient is φ = 110841120.

The previous prime is 395216911. The next prime is 395216947. The reversal of 395216934 is 439612593.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031707 + ... + 1032089.

It is an arithmetic number, because the mean of its divisors is an integer number (14376960).

Almost surely, 2^395216934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395216934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460062720).

395216934 is an abundant number, since it is smaller than the sum of its proper divisors (524908506).

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

395216934 is a wasteful number, since it uses less digits than its factorization.

395216934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its digits is 174960, while the sum is 42.

The square root of 395216934 is about 19880.0637322922. The cubic root of 395216934 is about 733.8576878379.

The spelling of 395216934 in words is "three hundred ninety-five million, two hundred sixteen thousand, nine hundred thirty-four".