405324985 has 16 divisors (see below), whose sum is σ = 532687680. Its totient is φ = 294240960.

The previous prime is 405324979. The next prime is 405325003. The reversal of 405324985 is 589423504.

It is not a de Polignac number, because 405324985 - 2³ = 405324977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49011 + ... + 56680.

It is an arithmetic number, because the mean of its divisors is an integer number (33292980).

Almost surely, 2^405324985 is an apocalyptic number.

It is an amenable number.

405324985 is a deficient number, since it is larger than the sum of its proper divisors (127362695).

405324985 is a wasteful number, since it uses less digits than its factorization.

405324985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105768.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 405324985 is about 20132.6844956156. The cubic root of 405324985 is about 740.0614661629.

The spelling of 405324985 in words is "four hundred five million, three hundred twenty-four thousand, nine hundred eighty-five".