212326399 has 4 divisors (see below), whose sum is σ = 213512760. Its totient is φ = 211140040.

The previous prime is 212326393. The next prime is 212326453. The reversal of 212326399 is 993623212.

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 212326399 - 2⁹ = 212325887 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 (212326393) 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, 592912 + ... + 593269.

It is an arithmetic number, because the mean of its divisors is an integer number (53378190).

Almost surely, 2^212326399 is an apocalyptic number.

212326399 is a deficient number, since it is larger than the sum of its proper divisors (1186361).

212326399 is a wasteful number, since it uses less digits than its factorization.

212326399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186360.

The product of its digits is 34992, while the sum is 37.

The square root of 212326399 is about 14571.4240553214. The cubic root of 212326399 is about 596.5790498286.

The spelling of 212326399 in words is "two hundred twelve million, three hundred twenty-six thousand, three hundred ninety-nine".