878236213 has 2 divisors, whose sum is σ = 878236214. Its totient is φ = 878236212.

The previous prime is 878236207. The next prime is 878236237. The reversal of 878236213 is 312632878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847566769 + 30669444 = 29113^2 + 5538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878236213 is a prime.

It is a super-5 number, since 5×878236213⁵ (a number of 46 digits) contains 55555 as substring.

It is equal to p_44953573 and since 878236213 and 44953573 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878236243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439118106 + 439118107.

It is an arithmetic number, because the mean of its divisors is an integer number (439118107).

Almost surely, 2^878236213 is an apocalyptic number.

It is an amenable number.

878236213 is a deficient number, since it is larger than the sum of its proper divisors (1).

878236213 is an equidigital number, since it uses as much as digits as its factorization.

878236213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 878236213 is about 29635.0504133197. The cubic root of 878236213 is about 957.6433125866.

The spelling of 878236213 in words is "eight hundred seventy-eight million, two hundred thirty-six thousand, two hundred thirteen".