395516399 has 4 divisors (see below), whose sum is σ = 395593800. Its totient is φ = 395439000.

The previous prime is 395516393. The next prime is 395516453. The reversal of 395516399 is 993615593.

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

It is a cyclic number.

It is not a de Polignac number, because 395516399 - 2²⁰ = 394467823 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 (395516393) 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, 30449 + ... + 41450.

It is an arithmetic number, because the mean of its divisors is an integer number (98898450).

Almost surely, 2^395516399 is an apocalyptic number.

395516399 is a deficient number, since it is larger than the sum of its proper divisors (77401).

395516399 is an equidigital number, since it uses as much as digits as its factorization.

395516399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77400.

The product of its digits is 984150, while the sum is 50.

The square root of 395516399 is about 19887.5940978289. The cubic root of 395516399 is about 734.0429946825.

The spelling of 395516399 in words is "three hundred ninety-five million, five hundred sixteen thousand, three hundred ninety-nine".