404464420 has 12 divisors (see below), whose sum is σ = 849375324. Its totient is φ = 161785760.

The previous prime is 404464399. The next prime is 404464433. The reversal of 404464420 is 24464404.

It can be written as a sum of positive squares in 2 ways, for example, as 70963776 + 333500644 = 8424^2 + 18262^2 .

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, 10111591 + ... + 10111630.

It is an arithmetic number, because the mean of its divisors is an integer number (70781277).

Almost surely, 2^404464420 is an apocalyptic number.

It is an amenable number.

404464420 is an abundant number, since it is smaller than the sum of its proper divisors (444910904).

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

404464420 is a wasteful number, since it uses less digits than its factorization.

404464420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20223230 (or 20223228 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 404464420 is about 20111.3008032797. The cubic root of 404464420 is about 739.5373416740.

The spelling of 404464420 in words is "four hundred four million, four hundred sixty-four thousand, four hundred twenty".