212330739 has 4 divisors (see below), whose sum is σ = 283107656. Its totient is φ = 141553824.

The previous prime is 212330659. The next prime is 212330747. The reversal of 212330739 is 937033212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212330739 - 2²³ = 203942131 is a prime.

It is a super-2 number, since 2×212330739² = 90168685448572242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212330639) 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 3 ways as a sum of consecutive naturals, for example, 35388454 + ... + 35388459.

It is an arithmetic number, because the mean of its divisors is an integer number (70776914).

Almost surely, 2^212330739 is an apocalyptic number.

212330739 is a deficient number, since it is larger than the sum of its proper divisors (70776917).

212330739 is an equidigital number, since it uses as much as digits as its factorization.

212330739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70776916.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 212330739 is about 14571.5729761752. The cubic root of 212330739 is about 596.5831145382.

The spelling of 212330739 in words is "two hundred twelve million, three hundred thirty thousand, seven hundred thirty-nine".