212293879 has 8 divisors (see below), whose sum is σ = 243046688. Its totient is φ = 181647360.

The previous prime is 212293853. The next prime is 212293889. The reversal of 212293879 is 978392212.

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 212293879 - 2¹⁵ = 212261111 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 (212293849) 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 7 ways as a sum of consecutive naturals, for example, 22242 + ... + 30319.

It is an arithmetic number, because the mean of its divisors is an integer number (30380836).

Almost surely, 2^212293879 is an apocalyptic number.

212293879 is a deficient number, since it is larger than the sum of its proper divisors (30752809).

212293879 is an equidigital number, since it uses as much as digits as its factorization.

212293879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53145.

The product of its digits is 108864, while the sum is 43.

The square root of 212293879 is about 14570.3081298921. The cubic root of 212293879 is about 596.5485908413.

The spelling of 212293879 in words is "two hundred twelve million, two hundred ninety-three thousand, eight hundred seventy-nine".