396486845 has 4 divisors (see below), whose sum is σ = 475784220. Its totient is φ = 317189472.

The previous prime is 396486833. The next prime is 396486847. The reversal of 396486845 is 548684693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548684693 = 2797 ⋅196169.

It can be written as a sum of positive squares in 2 ways, for example, as 180338041 + 216148804 = 13429^2 + 14702^2 .

It is a cyclic number.

It is not a de Polignac number, because 396486845 - 2⁶ = 396486781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396486847) 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 3 ways as a sum of consecutive naturals, for example, 39648680 + ... + 39648689.

It is an arithmetic number, because the mean of its divisors is an integer number (118946055).

Almost surely, 2^396486845 is an apocalyptic number.

It is an amenable number.

396486845 is a deficient number, since it is larger than the sum of its proper divisors (79297375).

396486845 is an equidigital number, since it uses as much as digits as its factorization.

396486845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79297374.

The product of its digits is 4976640, while the sum is 53.

The square root of 396486845 is about 19911.9774256602. The cubic root of 396486845 is about 734.6428579430.

It can be divided in two parts, 3964 and 86845, that added together give a palindrome (90809).

The spelling of 396486845 in words is "three hundred ninety-six million, four hundred eighty-six thousand, eight hundred forty-five".