405016244 has 12 divisors (see below), whose sum is σ = 711199524. Its totient is φ = 201816384.

The previous prime is 405016243. The next prime is 405016247. The reversal of 405016244 is 442610504.

It can be written as a sum of positive squares in 2 ways, for example, as 196560400 + 208455844 = 14020^2 + 14438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405016243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171617 + ... + 173960.

It is an arithmetic number, because the mean of its divisors is an integer number (59266627).

Almost surely, 2^405016244 is an apocalyptic number.

It is an amenable number.

405016244 is a deficient number, since it is larger than the sum of its proper divisors (306183280).

405016244 is a wasteful number, since it uses less digits than its factorization.

405016244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345874 (or 345872 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 405016244 is about 20125.0153788761. The cubic root of 405016244 is about 739.8735138086.

Adding to 405016244 its reverse (442610504), we get a palindrome (847626748).

The spelling of 405016244 in words is "four hundred five million, sixteen thousand, two hundred forty-four".