201440844 has 120 divisors (see below), whose sum is σ = 594594000. Its totient is φ = 58907520.

The previous prime is 201440843. The next prime is 201440881. The reversal of 201440844 is 448044102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (201440843) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 102382 + ... + 104330.

It is an arithmetic number, because the mean of its divisors is an integer number (4954950).

Almost surely, 2^201440844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201440844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297297000).

201440844 is an abundant number, since it is smaller than the sum of its proper divisors (393153156).

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

201440844 is a wasteful number, since it uses less digits than its factorization.

201440844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 201440844 is about 14192.9857323961. The cubic root of 201440844 is about 586.2045397955.

Adding to 201440844 its reverse (448044102), we get a palindrome (649484946).

The spelling of 201440844 in words is "two hundred one million, four hundred forty thousand, eight hundred forty-four".