47044440 has 96 divisors (see below), whose sum is σ = 161909280. Its totient is φ = 11805696.

The previous prime is 47044429. The next prime is 47044447. The reversal of 47044440 is 4444074.

47044440 = 727² + 728² + ... + 806².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47044447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2277 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (1686555).

Almost surely, 2^47044440 is an apocalyptic number.

47044440 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 47044440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80954640).

47044440 is an abundant number, since it is smaller than the sum of its proper divisors (114864840).

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

47044440 is a wasteful number, since it uses less digits than its factorization.

47044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7714 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 47044440 is about 6858.8949547285. The cubic root of 47044440 is about 360.9963141916.

The spelling of 47044440 in words is "forty-seven million, forty-four thousand, four hundred forty".