212306949 has 24 divisors (see below), whose sum is σ = 311111424. Its totient is φ = 139500000.

The previous prime is 212306917. The next prime is 212306977. The reversal of 212306949 is 949603212.

It is not a de Polignac number, because 212306949 - 2⁵ = 212306917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212306989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282324 + ... + 283074.

It is an arithmetic number, because the mean of its divisors is an integer number (12962976).

Almost surely, 2^212306949 is an apocalyptic number.

It is an amenable number.

212306949 is a deficient number, since it is larger than the sum of its proper divisors (98804475).

212306949 is a wasteful number, since it uses less digits than its factorization.

212306949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 212306949 is about 14570.7566378689. The cubic root of 212306949 is about 596.5608328807.

The spelling of 212306949 in words is "two hundred twelve million, three hundred six thousand, nine hundred forty-nine".