403402403 has 4 divisors (see below), whose sum is σ = 413241528. Its totient is φ = 393563280.

The previous prime is 403402387. The next prime is 403402409. The reversal of 403402403 is 304204304.

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 403402403 - 2⁴ = 403402387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403402409) 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, 4919501 + ... + 4919582.

It is an arithmetic number, because the mean of its divisors is an integer number (103310382).

Almost surely, 2^403402403 is an apocalyptic number.

403402403 is a deficient number, since it is larger than the sum of its proper divisors (9839125).

403402403 is an equidigital number, since it uses as much as digits as its factorization.

403402403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839124.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 403402403 is about 20084.8799598106. The cubic root of 403402403 is about 738.8894975839.

Adding to 403402403 its reverse (304204304), we get a palindrome (707606707).

The spelling of 403402403 in words is "four hundred three million, four hundred two thousand, four hundred three".