446711989 has 4 divisors (see below), whose sum is σ = 458785324. Its totient is φ = 434638656.

The previous prime is 446711963. The next prime is 446711999. The reversal of 446711989 is 989117644.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159138225 + 287573764 = 12615^2 + 16958^2 .

It is a cyclic number.

It is not a de Polignac number, because 446711989 - 2¹¹ = 446709941 is a prime.

It is a super-2 number, since 2×446711989² = 399103202232672242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446711929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6036612 + ... + 6036685.

It is an arithmetic number, because the mean of its divisors is an integer number (114696331).

Almost surely, 2^446711989 is an apocalyptic number.

It is an amenable number.

446711989 is a deficient number, since it is larger than the sum of its proper divisors (12073335).

446711989 is a wasteful number, since it uses less digits than its factorization.

446711989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073334.

The product of its digits is 435456, while the sum is 49.

The square root of 446711989 is about 21135.5621879334. The cubic root of 446711989 is about 764.4384726865.

The spelling of 446711989 in words is "four hundred forty-six million, seven hundred eleven thousand, nine hundred eighty-nine".