212491849 has 2 divisors, whose sum is σ = 212491850. Its totient is φ = 212491848.

The previous prime is 212491837. The next prime is 212491897. The reversal of 212491849 is 948194212.

212491849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212226624 + 265225 = 14568^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 212491849 - 2⁵ = 212491817 is a prime.

It is not a weakly prime, because it can be changed into another prime (212491819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106245924 + 106245925.

It is an arithmetic number, because the mean of its divisors is an integer number (106245925).

Almost surely, 2^212491849 is an apocalyptic number.

It is an amenable number.

212491849 is a deficient number, since it is larger than the sum of its proper divisors (1).

212491849 is an equidigital number, since it uses as much as digits as its factorization.

212491849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 212491849 is about 14577.1001574387. The cubic root of 212491849 is about 596.7339659983.

The spelling of 212491849 in words is "two hundred twelve million, four hundred ninety-one thousand, eight hundred forty-nine".