404789013 has 6 divisors (see below), whose sum is σ = 584695254. Its totient is φ = 269859336.

The previous prime is 404788987. The next prime is 404789027. The reversal of 404789013 is 310987404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 400880484 + 3908529 = 20022^2 + 1977^2 .

It is not a de Polignac number, because 404789013 - 2⁵ = 404788981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404789093) 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 5 ways as a sum of consecutive naturals, for example, 22488270 + ... + 22488287.

It is an arithmetic number, because the mean of its divisors is an integer number (97449209).

Almost surely, 2^404789013 is an apocalyptic number.

It is an amenable number.

404789013 is a deficient number, since it is larger than the sum of its proper divisors (179906241).

404789013 is a wasteful number, since it uses less digits than its factorization.

404789013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44976563 (or 44976560 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 404789013 is about 20119.3691004465. The cubic root of 404789013 is about 739.7351212940.

The spelling of 404789013 in words is "four hundred four million, seven hundred eighty-nine thousand, thirteen".