212779938 has 32 divisors (see below), whose sum is σ = 486933120. Its totient is φ = 60721920.

The previous prime is 212779937. The next prime is 212779961. The reversal of 212779938 is 839977212.

212779938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212779937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39868 + ... + 44888.

It is an arithmetic number, because the mean of its divisors is an integer number (15216660).

Almost surely, 2^212779938 is an apocalyptic number.

212779938 is an abundant number, since it is smaller than the sum of its proper divisors (274153182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212779938 is a wasteful number, since it uses less digits than its factorization.

212779938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6042.

The product of its digits is 381024, while the sum is 48.

The square root of 212779938 is about 14586.9783711364. The cubic root of 212779938 is about 597.0035212147.

The spelling of 212779938 in words is "two hundred twelve million, seven hundred seventy-nine thousand, nine hundred thirty-eight".