396126805 has 8 divisors (see below), whose sum is σ = 491743800. Its totient is φ = 305973696.

The previous prime is 396126803. The next prime is 396126817. The reversal of 396126805 is 508621693.

396126805 = 14073² + 14074².

It can be written as a sum of positive squares in 4 ways, for example, as 151954929 + 244171876 = 12327^2 + 15626^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 396126805 - 2¹ = 396126803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396126803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1365810 + ... + 1366099.

It is an arithmetic number, because the mean of its divisors is an integer number (61467975).

Almost surely, 2^396126805 is an apocalyptic number.

396126805 is the 14074-th centered square number.

It is an amenable number.

396126805 is a deficient number, since it is larger than the sum of its proper divisors (95616995).

396126805 is a wasteful number, since it uses less digits than its factorization.

396126805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731943.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 396126805 is about 19902.9345826187. The cubic root of 396126805 is about 734.4204201997.

The spelling of 396126805 in words is "three hundred ninety-six million, one hundred twenty-six thousand, eight hundred five".