395722215 has 96 divisors (see below), whose sum is σ = 847941120. Its totient is φ = 166655232.

The previous prime is 395722193. The next prime is 395722259. The reversal of 395722215 is 512227593.

It is not a de Polignac number, because 395722215 - 2⁵ = 395722183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395722215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 220552 + ... + 222338.

It is an arithmetic number, because the mean of its divisors is an integer number (8832720).

Almost surely, 2^395722215 is an apocalyptic number.

395722215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

395722215 is an abundant number, since it is smaller than the sum of its proper divisors (452218905).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395722215 is a wasteful number, since it uses less digits than its factorization.

395722215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861 (or 1858 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 395722215 is about 19892.7679069555. The cubic root of 395722215 is about 734.1702979543.

The spelling of 395722215 in words is "three hundred ninety-five million, seven hundred twenty-two thousand, two hundred fifteen".