395653 has 4 divisors (see below), whose sum is σ = 408448. Its totient is φ = 382860.

The previous prime is 395627. The next prime is 395657. The reversal of 395653 is 356593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356593 = 31 ⋅11503.

It is a cyclic number.

It is not a de Polignac number, because 395653 - 2⁵ = 395621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 12763 = 395653 / (3 + 9 + 5 + 6 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6351 + ... + 6412.

It is an arithmetic number, because the mean of its divisors is an integer number (102112).

2³⁹⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

395653 is a deficient number, since it is larger than the sum of its proper divisors (12795).

395653 is a wasteful number, since it uses less digits than its factorization.

395653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12794.

The product of its digits is 12150, while the sum is 31.

The square root of 395653 is about 629.0095388784. The cubic root of 395653 is about 73.4127491361.

Subtracting from 395653 its reverse (356593), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 395653 in words is "three hundred ninety-five thousand, six hundred fifty-three".