404473780 has 24 divisors (see below), whose sum is σ = 852563880. Its totient is φ = 161185920.

The previous prime is 404473777. The next prime is 404473829. The reversal of 404473780 is 87374404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5513104 + 398960676 = 2348^2 + 19974^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32211 + ... + 42970.

It is an arithmetic number, because the mean of its divisors is an integer number (35523495).

Almost surely, 2^404473780 is an apocalyptic number.

It is an amenable number.

404473780 is an abundant number, since it is smaller than the sum of its proper divisors (448090100).

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

404473780 is a wasteful number, since it uses less digits than its factorization.

404473780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75459 (or 75457 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 404473780 is about 20111.5335069208. The cubic root of 404473780 is about 739.5430463505.

The spelling of 404473780 in words is "four hundred four million, four hundred seventy-three thousand, seven hundred eighty".