445211400 has 96 divisors (see below), whose sum is σ = 1385223840. Its totient is φ = 118287360.

The previous prime is 445211387. The next prime is 445211413. The reversal of 445211400 is 4112544.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (445211387) and next prime (445211413).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182992 + ... + 185408.

It is an arithmetic number, because the mean of its divisors is an integer number (14429415).

Almost surely, 2^445211400 is an apocalyptic number.

445211400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445211400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692611920).

445211400 is an abundant number, since it is smaller than the sum of its proper divisors (940012440).

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

445211400 is a wasteful number, since it uses less digits than its factorization.

445211400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 445211400 is about 21100.0331753294. The cubic root of 445211400 is about 763.5815485803.

Adding to 445211400 its reverse (4112544), we get a palindrome (449323944).

The spelling of 445211400 in words is "four hundred forty-five million, two hundred eleven thousand, four hundred".