213220449 has 24 divisors (see below), whose sum is σ = 342381312. Its totient is φ = 126977760.

The previous prime is 213220433. The next prime is 213220457. The reversal of 213220449 is 944022312.

213220449 is a `hidden beast` number, since 213 + 2 + 2 + 0 + 449 = 666.

It is not a de Polignac number, because 213220449 - 2⁴ = 213220433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213220549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25767 + ... + 33020.

It is an arithmetic number, because the mean of its divisors is an integer number (14265888).

Almost surely, 2^213220449 is an apocalyptic number.

It is an amenable number.

213220449 is a deficient number, since it is larger than the sum of its proper divisors (129160863).

213220449 is a wasteful number, since it uses less digits than its factorization.

213220449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58837 (or 58834 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 213220449 is about 14602.0700244863. The cubic root of 213220449 is about 597.4152225323.

The spelling of 213220449 in words is "two hundred thirteen million, two hundred twenty thousand, four hundred forty-nine".