403220404 has 12 divisors (see below), whose sum is σ = 722846628. Its totient is φ = 196692800.

The previous prime is 403220387. The next prime is 403220423. The reversal of 403220404 is 404022304.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 354192400 = 7002^2 + 18820^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229167 + ... + 1229494.

It is an arithmetic number, because the mean of its divisors is an integer number (60237219).

Almost surely, 2^403220404 is an apocalyptic number.

It is an amenable number.

403220404 is a deficient number, since it is larger than the sum of its proper divisors (319626224).

403220404 is a wasteful number, since it uses less digits than its factorization.

403220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458706 (or 2458704 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 403220404 is about 20080.3487021516. The cubic root of 403220404 is about 738.7783617575.

Adding to 403220404 its reverse (404022304), we get a palindrome (807242708).

The spelling of 403220404 in words is "four hundred three million, two hundred twenty thousand, four hundred four".