404444557 has 12 divisors (see below), whose sum is σ = 447558300. Its totient is φ = 365192960.

The previous prime is 404444549. The next prime is 404444561. The reversal of 404444557 is 755444404.

It can be written as a sum of positive squares in 2 ways, for example, as 210511081 + 193933476 = 14509^2 + 13926^2 .

It is not a de Polignac number, because 404444557 - 2³ = 404444549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404444357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6813 + ... + 29245.

It is an arithmetic number, because the mean of its divisors is an integer number (37296525).

Almost surely, 2^404444557 is an apocalyptic number.

It is an amenable number.

404444557 is a deficient number, since it is larger than the sum of its proper divisors (43113743).

404444557 is a wasteful number, since it uses less digits than its factorization.

404444557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22604 (or 22593 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 37.

The square root of 404444557 is about 20110.8069703829. The cubic root of 404444557 is about 739.5252354004.

The spelling of 404444557 in words is "four hundred four million, four hundred forty-four thousand, five hundred fifty-seven".