212444413 has 4 divisors (see below), whose sum is σ = 212498748. Its totient is φ = 212390080.

The previous prime is 212444383. The next prime is 212444429. The reversal of 212444413 is 314444212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 113998329 + 98446084 = 10677^2 + 9922^2 .

It is a cyclic number.

It is not a de Polignac number, because 212444413 - 2²⁵ = 178889981 is a prime.

It is a super-2 number, since 2×212444413² = 90265257229829138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212444473) 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, 20806 + ... + 29287.

It is an arithmetic number, because the mean of its divisors is an integer number (53124687).

Almost surely, 2^212444413 is an apocalyptic number.

It is an amenable number.

212444413 is a deficient number, since it is larger than the sum of its proper divisors (54335).

212444413 is an equidigital number, since it uses as much as digits as its factorization.

212444413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54334.

The product of its digits is 3072, while the sum is 25.

The square root of 212444413 is about 14575.4729940404. The cubic root of 212444413 is about 596.6895583670.

Adding to 212444413 its reverse (314444212), we get a palindrome (526888625).

The spelling of 212444413 in words is "two hundred twelve million, four hundred forty-four thousand, four hundred thirteen".