212785949 has 8 divisors (see below), whose sum is σ = 224195712. Its totient is φ = 201556080.

The previous prime is 212785939. The next prime is 212785981. The reversal of 212785949 is 949587212.

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-212785949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212785939) 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, 42542 + ... + 47279.

It is an arithmetic number, because the mean of its divisors is an integer number (28024464).

Almost surely, 2^212785949 is an apocalyptic number.

It is an amenable number.

212785949 is a deficient number, since it is larger than the sum of its proper divisors (11409763).

212785949 is a wasteful number, since it uses less digits than its factorization.

212785949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89947.

The product of its digits is 362880, while the sum is 47.

The square root of 212785949 is about 14587.1844096111. The cubic root of 212785949 is about 597.0091429138.

The spelling of 212785949 in words is "two hundred twelve million, seven hundred eighty-five thousand, nine hundred forty-nine".