212771489 has 8 divisors (see below), whose sum is σ = 244574400. Its totient is φ = 181320336.

The previous prime is 212771407. The next prime is 212771539. The reversal of 212771489 is 984177212.

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

It is a cyclic number.

It is not a de Polignac number, because 212771489 - 2²⁴ = 195994273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212771189) 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 7 ways as a sum of consecutive naturals, for example, 86639 + ... + 89060.

It is an arithmetic number, because the mean of its divisors is an integer number (30571800).

Almost surely, 2^212771489 is an apocalyptic number.

It is an amenable number.

212771489 is a deficient number, since it is larger than the sum of its proper divisors (31802911).

212771489 is a wasteful number, since it uses less digits than its factorization.

212771489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175879.

The product of its digits is 56448, while the sum is 41.

The square root of 212771489 is about 14586.6887606475. The cubic root of 212771489 is about 596.9956192330.

The spelling of 212771489 in words is "two hundred twelve million, seven hundred seventy-one thousand, four hundred eighty-nine".