442446400490 has 64 divisors (see below), whose sum is σ = 806895108000. Its totient is φ = 174665465856.

The previous prime is 442446400489. The next prime is 442446400507. The reversal of 442446400490 is 94004644244.

It can be written as a sum of positive squares in 16 ways, for example, as 8635799041 + 433810601449 = 92929^2 + 658643^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194995076 + ... + 194997344.

Almost surely, 2^442446400490 is an apocalyptic number.

442446400490 is a deficient number, since it is larger than the sum of its proper divisors (364448707510).

442446400490 is a wasteful number, since it uses less digits than its factorization.

442446400490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 442446400490 in words is "four hundred forty-two billion, four hundred forty-six million, four hundred thousand, four hundred ninety".