446721489 has 12 divisors (see below), whose sum is σ = 645448336. Its totient is φ = 297729432.

The previous prime is 446721419. The next prime is 446721503. The reversal of 446721489 is 984127644.

It is not a de Polignac number, because 446721489 - 2⁹ = 446720977 is a prime.

It is a super-3 number, since 3×446721489³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (446721409) 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, 53982 + ... + 61704.

Almost surely, 2^446721489 is an apocalyptic number.

It is an amenable number.

446721489 is a deficient number, since it is larger than the sum of its proper divisors (198726847).

446721489 is a wasteful number, since it uses less digits than its factorization.

446721489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14156 (or 14153 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 446721489 is about 21135.7869264430. The cubic root of 446721489 is about 764.4438916247.

The spelling of 446721489 in words is "four hundred forty-six million, seven hundred twenty-one thousand, four hundred eighty-nine".