395221955 has 8 divisors (see below), whose sum is σ = 474377904. Its totient is φ = 316103200.

The previous prime is 395221951. The next prime is 395221963. The reversal of 395221955 is 559122593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 395221955 - 2² = 395221951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395221951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26900 + ... + 38910.

It is an arithmetic number, because the mean of its divisors is an integer number (59297238).

Almost surely, 2^395221955 is an apocalyptic number.

395221955 is a deficient number, since it is larger than the sum of its proper divisors (79155949).

395221955 is a wasteful number, since it uses less digits than its factorization.

395221955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597.

The product of its digits is 121500, while the sum is 41.

The square root of 395221955 is about 19880.1900141825. The cubic root of 395221955 is about 733.8607955689.

The spelling of 395221955 in words is "three hundred ninety-five million, two hundred twenty-one thousand, nine hundred fifty-five".