404479028 has 12 divisors (see below), whose sum is σ = 749475972. Its totient is φ = 190343040.

The previous prime is 404479013. The next prime is 404479051. The reversal of 404479028 is 820974404.

It can be written as a sum of positive squares in 2 ways, for example, as 110082064 + 294396964 = 10492^2 + 17158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404478982 and 404479000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2974043 + ... + 2974178.

It is an arithmetic number, because the mean of its divisors is an integer number (62456331).

Almost surely, 2^404479028 is an apocalyptic number.

It is an amenable number.

404479028 is a deficient number, since it is larger than the sum of its proper divisors (344996944).

404479028 is a wasteful number, since it uses less digits than its factorization.

404479028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948242 (or 5948240 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 404479028 is about 20111.6639788954. The cubic root of 404479028 is about 739.5462448316.

The spelling of 404479028 in words is "four hundred four million, four hundred seventy-nine thousand, twenty-eight".