404903963 has 4 divisors (see below), whose sum is σ = 409782408. Its totient is φ = 400025520.

The previous prime is 404903957. The next prime is 404904023. The reversal of 404903963 is 369309404.

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 404903963 - 2¹⁸ = 404641819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404903563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2439098 + ... + 2439263.

It is an arithmetic number, because the mean of its divisors is an integer number (102445602).

Almost surely, 2^404903963 is an apocalyptic number.

404903963 is a deficient number, since it is larger than the sum of its proper divisors (4878445).

404903963 is an equidigital number, since it uses as much as digits as its factorization.

404903963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878444.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 404903963 is about 20122.2255975824. The cubic root of 404903963 is about 739.8051367849.

The spelling of 404903963 in words is "four hundred four million, nine hundred three thousand, nine hundred sixty-three".