213912899 has 2 divisors, whose sum is σ = 213912900. Its totient is φ = 213912898.

The previous prime is 213912883. The next prime is 213913043. The reversal of 213912899 is 998219312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213912899 - 2⁴ = 213912883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213912499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106956449 + 106956450.

It is an arithmetic number, because the mean of its divisors is an integer number (106956450).

Almost surely, 2^213912899 is an apocalyptic number.

213912899 is a deficient number, since it is larger than the sum of its proper divisors (1).

213912899 is an equidigital number, since it uses as much as digits as its factorization.

213912899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The square root of 213912899 is about 14625.7614844493. The cubic root of 213912899 is about 598.0612411787.

The spelling of 213912899 in words is "two hundred thirteen million, nine hundred twelve thousand, eight hundred ninety-nine".