395496921 has 16 divisors (see below), whose sum is σ = 530600000. Its totient is φ = 262035648.

The previous prime is 395496919. The next prime is 395496953. The reversal of 395496921 is 129694593.

It is not a de Polignac number, because 395496921 - 2¹ = 395496919 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 (395495921) 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 15 ways as a sum of consecutive naturals, for example, 522075 + ... + 522831.

It is an arithmetic number, because the mean of its divisors is an integer number (33162500).

Almost surely, 2^395496921 is an apocalyptic number.

It is an amenable number.

395496921 is a deficient number, since it is larger than the sum of its proper divisors (135103079).

395496921 is a wasteful number, since it uses less digits than its factorization.

395496921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its digits is 524880, while the sum is 48.

The square root of 395496921 is about 19887.1043895284. The cubic root of 395496921 is about 734.0309446771.

The spelling of 395496921 in words is "three hundred ninety-five million, four hundred ninety-six thousand, nine hundred twenty-one".