404979503 has 2 divisors, whose sum is σ = 404979504. Its totient is φ = 404979502.

The previous prime is 404979451. The next prime is 404979511. The reversal of 404979503 is 305979404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404979503 - 2⁶ = 404979439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404979563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202489751 + 202489752.

It is an arithmetic number, because the mean of its divisors is an integer number (202489752).

Almost surely, 2^404979503 is an apocalyptic number.

404979503 is a deficient number, since it is larger than the sum of its proper divisors (1).

404979503 is an equidigital number, since it uses as much as digits as its factorization.

404979503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 404979503 is about 20124.1025389954. The cubic root of 404979503 is about 739.8511406197.

Subtracting from 404979503 its reverse (305979404), we obtain a palindrome (99000099).

The spelling of 404979503 in words is "four hundred four million, nine hundred seventy-nine thousand, five hundred three".