212958149 has 2 divisors, whose sum is σ = 212958150. Its totient is φ = 212958148.

The previous prime is 212958139. The next prime is 212958157. The reversal of 212958149 is 941859212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212955649 + 2500 = 14593^2 + 50^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212958149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212958139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106479074 + 106479075.

It is an arithmetic number, because the mean of its divisors is an integer number (106479075).

Almost surely, 2^212958149 is an apocalyptic number.

It is an amenable number.

212958149 is a deficient number, since it is larger than the sum of its proper divisors (1).

212958149 is an equidigital number, since it uses as much as digits as its factorization.

212958149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 212958149 is about 14593.0856572556. The cubic root of 212958149 is about 597.1701454851.

The spelling of 212958149 in words is "two hundred twelve million, nine hundred fifty-eight thousand, one hundred forty-nine".