396328465 has 8 divisors (see below), whose sum is σ = 512178408. Its totient is φ = 292673280.

The previous prime is 396328451. The next prime is 396328489. The reversal of 396328465 is 564823693.

It is a happy number.

It is a Cunningham number, because it is equal to 19908²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 396328464 = 1^2 + 19908^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-396328465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3048616 + ... + 3048745.

It is an arithmetic number, because the mean of its divisors is an integer number (64022301).

Almost surely, 2^396328465 is an apocalyptic number.

It is an amenable number.

396328465 is a deficient number, since it is larger than the sum of its proper divisors (115849943).

396328465 is a wasteful number, since it uses less digits than its factorization.

396328465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097379.

The product of its digits is 933120, while the sum is 46.

The square root of 396328465 is about 19908.0000251155. Note that the first 4 decimals coincide. The cubic root of 396328465 is about 734.5450251621.

The spelling of 396328465 in words is "three hundred ninety-six million, three hundred twenty-eight thousand, four hundred sixty-five".