445620444 has 24 divisors (see below), whose sum is σ = 1040178048. Its totient is φ = 148483440.

The previous prime is 445620407. The next prime is 445620499. The reversal of 445620444 is 444026544.

It is a super-2 number, since 2×445620444² = 397155160221514272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36249 + ... + 46959.

It is an arithmetic number, because the mean of its divisors is an integer number (43340752).

Almost surely, 2^445620444 is an apocalyptic number.

It is an amenable number.

445620444 is an abundant number, since it is smaller than the sum of its proper divisors (594557604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445620444 is a wasteful number, since it uses less digits than its factorization.

445620444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14185 (or 14183 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The square root of 445620444 is about 21109.7239205064. The cubic root of 445620444 is about 763.8153272936.

Adding to 445620444 its reverse (444026544), we get a palindrome (889646988).

The spelling of 445620444 in words is "four hundred forty-five million, six hundred twenty thousand, four hundred forty-four".