423221413 has 4 divisors (see below), whose sum is σ = 441622368. Its totient is φ = 404820460.

The previous prime is 423221353. The next prime is 423221419. The reversal of 423221413 is 314122324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423221413 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 (423221419) 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, 9200443 + ... + 9200488.

It is an arithmetic number, because the mean of its divisors is an integer number (110405592).

Almost surely, 2^423221413 is an apocalyptic number.

It is an amenable number.

423221413 is a deficient number, since it is larger than the sum of its proper divisors (18400955).

423221413 is a wasteful number, since it uses less digits than its factorization.

423221413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18400954.

The product of its digits is 1152, while the sum is 22.

The square root of 423221413 is about 20572.3458312367. The cubic root of 423221413 is about 750.7970270675.

Adding to 423221413 its reverse (314122324), we get a palindrome (737343737).

The spelling of 423221413 in words is "four hundred twenty-three million, two hundred twenty-one thousand, four hundred thirteen".