444404690 has 8 divisors (see below), whose sum is σ = 799928460. Its totient is φ = 177761872.

The previous prime is 444404683. The next prime is 444404707. The reversal of 444404690 is 96404444.

It can be written as a sum of positive squares in 2 ways, for example, as 435181321 + 9223369 = 20861^2 + 3037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×444404690² = 394991056987992200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444404690.

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, 22220225 + ... + 22220244.

Almost surely, 2^444404690 is an apocalyptic number.

444404690 is a deficient number, since it is larger than the sum of its proper divisors (355523770).

444404690 is a wasteful number, since it uses less digits than its factorization.

444404690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44440476.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 444404690 is about 21080.9081872675. The cubic root of 444404690 is about 763.1200739511.

The spelling of 444404690 in words is "four hundred forty-four million, four hundred four thousand, six hundred ninety".