212519949 has 4 divisors (see below), whose sum is σ = 283359936. Its totient is φ = 141679964.

The previous prime is 212519939. The next prime is 212519963. The reversal of 212519949 is 949915212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212519949 - 2²⁰ = 211471373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212519949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212519929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35419989 + ... + 35419994.

It is an arithmetic number, because the mean of its divisors is an integer number (70839984).

Almost surely, 2^212519949 is an apocalyptic number.

It is an amenable number.

212519949 is a deficient number, since it is larger than the sum of its proper divisors (70839987).

212519949 is an equidigital number, since it uses as much as digits as its factorization.

212519949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70839986.

The product of its digits is 58320, while the sum is 42.

The square root of 212519949 is about 14578.0639661102. The cubic root of 212519949 is about 596.7602689450.

The spelling of 212519949 in words is "two hundred twelve million, five hundred nineteen thousand, nine hundred forty-nine".