446642021 has 8 divisors (see below), whose sum is σ = 528049920. Its totient is φ = 369634608.

The previous prime is 446641999. The next prime is 446642041. The reversal of 446642021 is 120246644.

It is a happy number.

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

It is not a de Polignac number, because 446642021 - 2¹⁴ = 446625637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446642041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099901 + ... + 1100306.

It is an arithmetic number, because the mean of its divisors is an integer number (66006240).

Almost surely, 2^446642021 is an apocalyptic number.

It is an amenable number.

446642021 is a deficient number, since it is larger than the sum of its proper divisors (81407899).

446642021 is a wasteful number, since it uses less digits than its factorization.

446642021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200243.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 446642021 is about 21133.9069033627. The cubic root of 446642021 is about 764.3985595545.

Adding to 446642021 its reverse (120246644), we get a palindrome (566888665).

The spelling of 446642021 in words is "four hundred forty-six million, six hundred forty-two thousand, twenty-one".