395609634 has 72 divisors (see below), whose sum is σ = 1001630448. Its totient is φ = 112518000.

The previous prime is 395609579. The next prime is 395609647. The reversal of 395609634 is 436906593.

It is a happy number.

395609634 is a `hidden beast` number, since 3 + 9 + 5 + 6 + 0 + 9 + 634 = 666.

It is a super-2 number, since 2×395609634² = 313013965027227912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 395609634.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 220489 + ... + 222275.

It is an arithmetic number, because the mean of its divisors is an integer number (13911534).

Almost surely, 2^395609634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395609634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500815224).

395609634 is an abundant number, since it is smaller than the sum of its proper divisors (606020814).

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

395609634 is a wasteful number, since it uses less digits than its factorization.

395609634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 395609634 is about 19889.9380089532. The cubic root of 395609634 is about 734.1006687526.

It can be divided in two parts, 39560 and 9634, that added together give a palindrome (49194).

The spelling of 395609634 in words is "three hundred ninety-five million, six hundred nine thousand, six hundred thirty-four".