405444452 has 48 divisors (see below), whose sum is σ = 825323520. Its totient is φ = 170698752.

The previous prime is 405444451. The next prime is 405444467. The reversal of 405444452 is 254444504.

It is not an unprimeable number, because it can be changed into a prime (405444451) 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 15 ways as a sum of consecutive naturals, for example, 401324 + ... + 402332.

It is an arithmetic number, because the mean of its divisors is an integer number (17194240).

Almost surely, 2^405444452 is an apocalyptic number.

It is an amenable number.

405444452 is an abundant number, since it is smaller than the sum of its proper divisors (419879068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405444452 is a wasteful number, since it uses less digits than its factorization.

405444452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The square root of 405444452 is about 20135.6512683350. The cubic root of 405444452 is about 740.1341685141.

Adding to 405444452 its reverse (254444504), we get a palindrome (659888956).

The spelling of 405444452 in words is "four hundred five million, four hundred forty-four thousand, four hundred fifty-two".