403423403 has 8 divisors (see below), whose sum is σ = 406661472. Its totient is φ = 400195456.

The previous prime is 403423399. The next prime is 403423421. The reversal of 403423403 is 304324304.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 403423403 - 2² = 403423399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403423003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90851 + ... + 95187.

It is an arithmetic number, because the mean of its divisors is an integer number (50832684).

Almost surely, 2^403423403 is an apocalyptic number.

403423403 is a deficient number, since it is larger than the sum of its proper divisors (3238069).

403423403 is a wasteful number, since it uses less digits than its factorization.

403423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 403423403 is about 20085.4027343242. The cubic root of 403423403 is about 738.9023188678.

Adding to 403423403 its reverse (304324304), we get a palindrome (707747707).

Subtracting from 403423403 its reverse (304324304), we obtain a palindrome (99099099).

The spelling of 403423403 in words is "four hundred three million, four hundred twenty-three thousand, four hundred three".