406163213 has 2 divisors, whose sum is σ = 406163214. Its totient is φ = 406163212.

The previous prime is 406163207. The next prime is 406163227. The reversal of 406163213 is 312361604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400720324 + 5442889 = 20018^2 + 2333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406163213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406163243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203081606 + 203081607.

It is an arithmetic number, because the mean of its divisors is an integer number (203081607).

Almost surely, 2^406163213 is an apocalyptic number.

It is an amenable number.

406163213 is a deficient number, since it is larger than the sum of its proper divisors (1).

406163213 is an equidigital number, since it uses as much as digits as its factorization.

406163213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 406163213 is about 20153.4913352501. The cubic root of 406163213 is about 740.5712736235.

The spelling of 406163213 in words is "four hundred six million, one hundred sixty-three thousand, two hundred thirteen".