404505340 has 24 divisors (see below), whose sum is σ = 878754240. Its totient is φ = 156222528.

The previous prime is 404505289. The next prime is 404505341. The reversal of 404505340 is 43505404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404505341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348132 + ... + 349291.

It is an arithmetic number, because the mean of its divisors is an integer number (36614760).

Almost surely, 2^404505340 is an apocalyptic number.

It is an amenable number.

404505340 is an abundant number, since it is smaller than the sum of its proper divisors (474248900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404505340 is a wasteful number, since it uses less digits than its factorization.

404505340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697461 (or 697459 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 404505340 is about 20112.3181160203. The cubic root of 404505340 is about 739.5622807012.

The spelling of 404505340 in words is "four hundred four million, five hundred five thousand, three hundred forty".