395223689 has 4 divisors (see below), whose sum is σ = 451684224. Its totient is φ = 338763156.

The previous prime is 395223671. The next prime is 395223691. The reversal of 395223689 is 986322593.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 395223689 - 2¹² = 395219593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (395223659) 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, 28230257 + ... + 28230270.

It is an arithmetic number, because the mean of its divisors is an integer number (112921056).

Almost surely, 2^395223689 is an apocalyptic number.

It is an amenable number.

395223689 is a deficient number, since it is larger than the sum of its proper divisors (56460535).

395223689 is an equidigital number, since it uses as much as digits as its factorization.

395223689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56460534.

The product of its digits is 699840, while the sum is 47.

The square root of 395223689 is about 19880.2336253878. The cubic root of 395223689 is about 733.8618688163.

The spelling of 395223689 in words is "three hundred ninety-five million, two hundred twenty-three thousand, six hundred eighty-nine".