212696009 has 8 divisors (see below), whose sum is σ = 217427328. Its totient is φ = 207973360.

The previous prime is 212695997. The next prime is 212696021. The reversal of 212696009 is 900696212.

It is an interprime number because it is at equal distance from previous prime (212695997) and next prime (212696021).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212696009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212696009.

It is not an unprimeable number, because it can be changed into a prime (212696059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87014 + ... + 89424.

It is an arithmetic number, because the mean of its divisors is an integer number (27178416).

Almost surely, 2^212696009 is an apocalyptic number.

It is an amenable number.

212696009 is a deficient number, since it is larger than the sum of its proper divisors (4731319).

212696009 is a wasteful number, since it uses less digits than its factorization.

212696009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 212696009 is about 14584.1012407347. The cubic root of 212696009 is about 596.9250167930.

The spelling of 212696009 in words is "two hundred twelve million, six hundred ninety-six thousand, nine".