212274439 has 8 divisors (see below), whose sum is σ = 234782240. Its totient is φ = 190649376.

The previous prime is 212274421. The next prime is 212274463. The reversal of 212274439 is 934472212.

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 212274439 - 2⁷ = 212274311 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 (212274739) 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, 220179 + ... + 221140.

It is an arithmetic number, because the mean of its divisors is an integer number (29347780).

Almost surely, 2^212274439 is an apocalyptic number.

212274439 is a deficient number, since it is larger than the sum of its proper divisors (22507801).

212274439 is a wasteful number, since it uses less digits than its factorization.

212274439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441369.

The product of its digits is 24192, while the sum is 34.

The square root of 212274439 is about 14569.6410044997. The cubic root of 212274439 is about 596.5303814003.

The spelling of 212274439 in words is "two hundred twelve million, two hundred seventy-four thousand, four hundred thirty-nine".