396549122 has 6 divisors (see below), whose sum is σ = 594865929. Its totient is φ = 198260480.

The previous prime is 396549121. The next prime is 396549149. The reversal of 396549122 is 221945693.

It can be written as a sum of positive squares in 2 ways, for example, as 347114161 + 49434961 = 18631^2 + 7031^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14081.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396549122.

It is not an unprimeable number, because it can be changed into a prime (396549121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21122 + ... + 35202.

Almost surely, 2^396549122 is an apocalyptic number.

396549122 is a deficient number, since it is larger than the sum of its proper divisors (198316807).

396549122 is an frugal number, since it uses more digits than its factorization.

396549122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28164 (or 14083 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 396549122 is about 19913.5411717756. The cubic root of 396549122 is about 734.6813198816.

The spelling of 396549122 in words is "three hundred ninety-six million, five hundred forty-nine thousand, one hundred twenty-two".