395136506 has 4 divisors (see below), whose sum is σ = 592704762. Its totient is φ = 197568252.

The previous prime is 395136461. The next prime is 395136563. The reversal of 395136506 is 605631593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214476025 + 180660481 = 14645^2 + 13441^2 .

It is a super-2 number, since 2×395136506² = 312265716747776072, 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 395136506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98784125 + ... + 98784128.

Almost surely, 2^395136506 is an apocalyptic number.

395136506 is a deficient number, since it is larger than the sum of its proper divisors (197568256).

395136506 is a wasteful number, since it uses less digits than its factorization.

395136506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197568255.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 395136506 is about 19878.0407988313. The cubic root of 395136506 is about 733.8079036094.

The spelling of 395136506 in words is "three hundred ninety-five million, one hundred thirty-six thousand, five hundred six".