446666729 has 8 divisors (see below), whose sum is σ = 462693000. Its totient is φ = 430682112.

The previous prime is 446666719. The next prime is 446666767. The reversal of 446666729 is 927666644.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22306729 + 424360000 = 4723^2 + 20600^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 446666729 - 2⁴ = 446666713 is a prime.

It is a super-2 number, since 2×446666729² = 399022333591118882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (446666719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12287 + ... + 32315.

It is an arithmetic number, because the mean of its divisors is an integer number (57836625).

Almost surely, 2^446666729 is an apocalyptic number.

It is an amenable number.

446666729 is a deficient number, since it is larger than the sum of its proper divisors (16026271).

446666729 is a wasteful number, since it uses less digits than its factorization.

446666729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20827.

The product of its digits is 2612736, while the sum is 50.

The square root of 446666729 is about 21134.4914535458. The cubic root of 446666729 is about 764.4126546690.

The spelling of 446666729 in words is "four hundred forty-six million, six hundred sixty-six thousand, seven hundred twenty-nine".