404464720 has 40 divisors (see below), whose sum is σ = 1025871840. Its totient is φ = 147077760.

The previous prime is 404464703. The next prime is 404464721. The reversal of 404464720 is 27464404.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404464721) 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 7 ways as a sum of consecutive naturals, for example, 228930 + ... + 230689.

It is an arithmetic number, because the mean of its divisors is an integer number (25646796).

Almost surely, 2^404464720 is an apocalyptic number.

404464720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404464720 is an abundant number, since it is smaller than the sum of its proper divisors (621407120).

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

404464720 is a wasteful number, since it uses less digits than its factorization.

404464720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459643 (or 459637 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 404464720 is about 20111.3082617715. The cubic root of 404464720 is about 739.5375245175.

It can be divided in two parts, 404 and 464720, that added together give a square (465124 = 682²).

The spelling of 404464720 in words is "four hundred four million, four hundred sixty-four thousand, seven hundred twenty".