404241913 has 2 divisors, whose sum is σ = 404241914. Its totient is φ = 404241912.

The previous prime is 404241911. The next prime is 404241923. The reversal of 404241913 is 319142404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233233984 + 171007929 = 15272^2 + 13077^2 .

It is a cyclic number.

It is not a de Polignac number, because 404241913 - 2¹ = 404241911 is a prime.

Together with 404241911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404241911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202120956 + 202120957.

It is an arithmetic number, because the mean of its divisors is an integer number (202120957).

Almost surely, 2^404241913 is an apocalyptic number.

It is an amenable number.

404241913 is a deficient number, since it is larger than the sum of its proper divisors (1).

404241913 is an equidigital number, since it uses as much as digits as its factorization.

404241913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 404241913 is about 20105.7681524482. The cubic root of 404241913 is about 739.4017035220.

The spelling of 404241913 in words is "four hundred four million, two hundred forty-one thousand, nine hundred thirteen".