213992445 has 8 divisors (see below), whose sum is σ = 342387936. Its totient is φ = 114129296.

The previous prime is 213992399. The next prime is 213992477. The reversal of 213992445 is 544299312.

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 213992445 - 2⁹ = 213991933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7133067 + ... + 7133096.

It is an arithmetic number, because the mean of its divisors is an integer number (42798492).

Almost surely, 2^213992445 is an apocalyptic number.

It is an amenable number.

213992445 is a deficient number, since it is larger than the sum of its proper divisors (128395491).

213992445 is a wasteful number, since it uses less digits than its factorization.

213992445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266171.

The product of its digits is 77760, while the sum is 39.

The square root of 213992445 is about 14628.4806114647. The cubic root of 213992445 is about 598.1353640016.

The spelling of 213992445 in words is "two hundred thirteen million, nine hundred ninety-two thousand, four hundred forty-five".