213449 has 2 divisors, whose sum is σ = 213450. Its totient is φ = 213448.

The previous prime is 213407. The next prime is 213461. The reversal of 213449 is 944312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 1849 = 460^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 213449 - 2⁸ = 213193 is a prime.

It is a Chen prime.

It is equal to p₁₉₀₈₅ and since 213449 and 19085 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (213149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106724 + 106725.

It is an arithmetic number, because the mean of its divisors is an integer number (106725).

2²¹³⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

213449 is a deficient number, since it is larger than the sum of its proper divisors (1).

213449 is an equidigital number, since it uses as much as digits as its factorization.

213449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 213449 is about 462.0054112237. The cubic root of 213449 is about 59.7628602769.

The spelling of 213449 in words is "two hundred thirteen thousand, four hundred forty-nine".