4211440 has 40 divisors (see below), whose sum is σ = 9963648. Its totient is φ = 1655040.

The previous prime is 4211423. The next prime is 4211491. The reversal of 4211440 is 441124.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4449 + ... + 5311.

Almost surely, 2^4211440 is an apocalyptic number.

4211440 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 4211440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4981824).

4211440 is an abundant number, since it is smaller than the sum of its proper divisors (5752208).

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

4211440 is a wasteful number, since it uses less digits than its factorization.

4211440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4211440 is about 2052.1793293959. The cubic root of 4211440 is about 161.4892208776.

Adding to 4211440 its reverse (441124), we get a palindrome (4652564).

The spelling of 4211440 in words is "four million, two hundred eleven thousand, four hundred forty".