405450213 has 16 divisors (see below), whose sum is σ = 618178176. Its totient is φ = 231554880.

The previous prime is 405450197. The next prime is 405450217. The reversal of 405450213 is 312054504.

It is not a de Polignac number, because 405450213 - 2⁴ = 405450197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405450217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42295 + ... + 50987.

It is an arithmetic number, because the mean of its divisors is an integer number (38636136).

Almost surely, 2^405450213 is an apocalyptic number.

It is an amenable number.

405450213 is a deficient number, since it is larger than the sum of its proper divisors (212727963).

405450213 is a wasteful number, since it uses less digits than its factorization.

405450213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10924.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 405450213 is about 20135.7943225491. The cubic root of 405450213 is about 740.1376740438.

The spelling of 405450213 in words is "four hundred five million, four hundred fifty thousand, two hundred thirteen".