416221243 has 4 divisors (see below), whose sum is σ = 424074528. Its totient is φ = 408367960.

The previous prime is 416221231. The next prime is 416221259. The reversal of 416221243 is 342122614.

It is a happy number.

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 416221243 - 2²⁵ = 382666811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416221643) 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, 3926563 + ... + 3926668.

It is an arithmetic number, because the mean of its divisors is an integer number (106018632).

Almost surely, 2^416221243 is an apocalyptic number.

416221243 is a deficient number, since it is larger than the sum of its proper divisors (7853285).

416221243 is an equidigital number, since it uses as much as digits as its factorization.

416221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853284.

The product of its digits is 2304, while the sum is 25.

The square root of 416221243 is about 20401.5009987011. The cubic root of 416221243 is about 746.6345463657.

Adding to 416221243 its reverse (342122614), we get a palindrome (758343857).

The spelling of 416221243 in words is "four hundred sixteen million, two hundred twenty-one thousand, two hundred forty-three".