404509964 has 6 divisors (see below), whose sum is σ = 707892444. Its totient is φ = 202254980.

The previous prime is 404509961. The next prime is 404509967. The reversal of 404509964 is 469905404.

It is an interprime number because it is at equal distance from previous prime (404509961) and next prime (404509967).

It is not an unprimeable number, because it can be changed into a prime (404509961) 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 as a sum of consecutive naturals, namely, 50563742 + ... + 50563749.

It is an arithmetic number, because the mean of its divisors is an integer number (117982074).

Almost surely, 2^404509964 is an apocalyptic number.

It is an amenable number.

404509964 is a deficient number, since it is larger than the sum of its proper divisors (303382480).

404509964 is a wasteful number, since it uses less digits than its factorization.

404509964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101127495 (or 101127493 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 404509964 is about 20112.4330701186. The cubic root of 404509964 is about 739.5650987299.

The spelling of 404509964 in words is "four hundred four million, five hundred nine thousand, nine hundred sixty-four".