212426979 has 8 divisors (see below), whose sum is σ = 284974272. Its totient is φ = 140748840.

The previous prime is 212426969. The next prime is 212426983. The reversal of 212426979 is 979624212.

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

It is not a de Polignac number, because 212426979 - 2⁸ = 212426723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212426979.

It is not an unprimeable number, because it can be changed into a prime (212426909) 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, 216717 + ... + 217694.

It is an arithmetic number, because the mean of its divisors is an integer number (35621784).

Almost surely, 2^212426979 is an apocalyptic number.

212426979 is a deficient number, since it is larger than the sum of its proper divisors (72547293).

212426979 is a wasteful number, since it uses less digits than its factorization.

212426979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434577.

The product of its digits is 108864, while the sum is 42.

The square root of 212426979 is about 14574.8749222763. The cubic root of 212426979 is about 596.6732357124.

The spelling of 212426979 in words is "two hundred twelve million, four hundred twenty-six thousand, nine hundred seventy-nine".