1223407 has 4 divisors (see below), whose sum is σ = 1240240. Its totient is φ = 1206576.

The previous prime is 1223381. The next prime is 1223419. The reversal of 1223407 is 7043221.

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 1223407 - 2⁷ = 1223279 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8307 + ... + 8452.

It is an arithmetic number, because the mean of its divisors is an integer number (310060).

2^1223407 is an apocalyptic number.

1223407 is a deficient number, since it is larger than the sum of its proper divisors (16833).

1223407 is an equidigital number, since it uses as much as digits as its factorization.

1223407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16832.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1223407 is about 1106.0773029043. The cubic root of 1223407 is about 106.9523472556.

Adding to 1223407 its reverse (7043221), we get a palindrome (8266628).

The spelling of 1223407 in words is "one million, two hundred twenty-three thousand, four hundred seven".