395522861 has 4 divisors (see below), whose sum is σ = 395920572. Its totient is φ = 395125152.

The previous prime is 395522857. The next prime is 395522863. The reversal of 395522861 is 168225593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168225593 = 379 ⋅443867.

It can be written as a sum of positive squares in 2 ways, for example, as 167210761 + 228312100 = 12931^2 + 15110^2 .

It is a cyclic number.

It is not a de Polignac number, because 395522861 - 2² = 395522857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395522863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197360 + ... + 199353.

It is an arithmetic number, because the mean of its divisors is an integer number (98980143).

Almost surely, 2^395522861 is an apocalyptic number.

It is an amenable number.

395522861 is a deficient number, since it is larger than the sum of its proper divisors (397711).

395522861 is an equidigital number, since it uses as much as digits as its factorization.

395522861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397710.

The product of its digits is 129600, while the sum is 41.

The square root of 395522861 is about 19887.7565602559. The cubic root of 395522861 is about 734.0469922917.

The spelling of 395522861 in words is "three hundred ninety-five million, five hundred twenty-two thousand, eight hundred sixty-one".