396044665 has 16 divisors (see below), whose sum is σ = 505109520. Its totient is φ = 297072640.

The previous prime is 396044657. The next prime is 396044681. The reversal of 396044665 is 566440693.

It can be written as a sum of positive squares in 8 ways, for example, as 34892649 + 361152016 = 5907^2 + 19004^2 .

It is not a de Polignac number, because 396044665 - 2³ = 396044657 is a prime.

It is a super-3 number, since 3×396044665³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

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, 14205 + ... + 31525.

It is an arithmetic number, because the mean of its divisors is an integer number (31569345).

Almost surely, 2^396044665 is an apocalyptic number.

It is an amenable number.

396044665 is a deficient number, since it is larger than the sum of its proper divisors (109064855).

396044665 is a wasteful number, since it uses less digits than its factorization.

396044665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17612.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 396044665 is about 19900.8709608399. The cubic root of 396044665 is about 734.3696540791.

The spelling of 396044665 in words is "three hundred ninety-six million, forty-four thousand, six hundred sixty-five".