212829863 has 4 divisors (see below), whose sum is σ = 213253488. Its totient is φ = 212406240.

The previous prime is 212829853. The next prime is 212829907. The reversal of 212829863 is 368928212.

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

It is a cyclic number.

It is not a de Polignac number, because 212829863 - 2⁴ = 212829847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212829863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212829853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211058 + ... + 212063.

It is an arithmetic number, because the mean of its divisors is an integer number (53313372).

Almost surely, 2^212829863 is an apocalyptic number.

212829863 is a deficient number, since it is larger than the sum of its proper divisors (423625).

212829863 is an equidigital number, since it uses as much as digits as its factorization.

212829863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423624.

The product of its digits is 82944, while the sum is 41.

The square root of 212829863 is about 14588.6895573249. The cubic root of 212829863 is about 597.0502096232.

The spelling of 212829863 in words is "two hundred twelve million, eight hundred twenty-nine thousand, eight hundred sixty-three".