404013403 has 2 divisors, whose sum is σ = 404013404. Its totient is φ = 404013402.

The previous prime is 404013391. The next prime is 404013409. The reversal of 404013403 is 304310404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404013403 - 2⁵ = 404013371 is a prime.

It is not a weakly prime, because it can be changed into another prime (404013409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202006701 + 202006702.

It is an arithmetic number, because the mean of its divisors is an integer number (202006702).

Almost surely, 2^404013403 is an apocalyptic number.

404013403 is a deficient number, since it is larger than the sum of its proper divisors (1).

404013403 is an equidigital number, since it uses as much as digits as its factorization.

404013403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 404013403 is about 20100.0846515630. The cubic root of 404013403 is about 739.2623541831.

Adding to 404013403 its reverse (304310404), we get a palindrome (708323807).

The spelling of 404013403 in words is "four hundred four million, thirteen thousand, four hundred three".