446444645 has 16 divisors (see below), whose sum is σ = 540229872. Its totient is φ = 354170880.

The previous prime is 446444641. The next prime is 446444659. The reversal of 446444645 is 546444644.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14386849 + 432057796 = 3793^2 + 20786^2 .

It is not a de Polignac number, because 446444645 - 2² = 446444641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446444641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608699 + ... + 609431.

It is an arithmetic number, because the mean of its divisors is an integer number (33764367).

Almost surely, 2^446444645 is an apocalyptic number.

It is an amenable number.

446444645 is a deficient number, since it is larger than the sum of its proper divisors (93785227).

446444645 is a wasteful number, since it uses less digits than its factorization.

446444645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its digits is 737280, while the sum is 41.

The square root of 446444645 is about 21129.2367349131. The cubic root of 446444645 is about 764.2859442662.

Subtracting 446444645 from its reverse (546444644), we obtain a palindrome (99999999).

The spelling of 446444645 in words is "four hundred forty-six million, four hundred forty-four thousand, six hundred forty-five".