405084845 has 16 divisors (see below), whose sum is σ = 558204480. Its totient is φ = 279100800.

The previous prime is 405084839. The next prime is 405084853. The reversal of 405084845 is 548480504.

It is a happy number.

It is not a de Polignac number, because 405084845 - 2²² = 400890541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405084799 and 405084808.

It is a congruent number.

It is an unprimeable number.

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, 192776 + ... + 194865.

It is an arithmetic number, because the mean of its divisors is an integer number (34887780).

Almost surely, 2^405084845 is an apocalyptic number.

It is an amenable number.

405084845 is a deficient number, since it is larger than the sum of its proper divisors (153119635).

405084845 is a wasteful number, since it uses less digits than its factorization.

405084845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387676.

The product of its (nonzero) digits is 102400, while the sum is 38.

The square root of 405084845 is about 20126.7196780797. The cubic root of 405084845 is about 739.9152843123.

The spelling of 405084845 in words is "four hundred five million, eighty-four thousand, eight hundred forty-five".