405394213 has 8 divisors (see below), whose sum is σ = 463478400. Its totient is φ = 347352720.

The previous prime is 405394181. The next prime is 405394229. The reversal of 405394213 is 312493504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405394213 - 2⁵ = 405394181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405394273) 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 7 ways as a sum of consecutive naturals, for example, 13263 + ... + 31411.

It is an arithmetic number, because the mean of its divisors is an integer number (57934800).

Almost surely, 2^405394213 is an apocalyptic number.

It is an amenable number.

405394213 is a deficient number, since it is larger than the sum of its proper divisors (58084187).

405394213 is a wasteful number, since it uses less digits than its factorization.

405394213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 405394213 is about 20134.4037160279. The cubic root of 405394213 is about 740.1035970131.

The spelling of 405394213 in words is "four hundred five million, three hundred ninety-four thousand, two hundred thirteen".