5440393980 has 216 divisors, whose sum is σ = 19492383456. Its totient is φ = 1203137280.

The previous prime is 5440393969. The next prime is 5440393999. The reversal of 5440393980 is 893930445.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1208614 + ... + 1213106.

It is an arithmetic number, because the mean of its divisors is an integer number (90242516).

Almost surely, 2^5440393980 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 5440393980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9746191728).

5440393980 is an abundant number, since it is smaller than the sum of its proper divisors (14051989476).

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

5440393980 is a wasteful number, since it uses less digits than its factorization.

5440393980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577 (or 4541 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 5440393980 is about 73759.0264306681. The cubic root of 5440393980 is about 1758.7743252637.

The spelling of 5440393980 in words is "five billion, four hundred forty million, three hundred ninety-three thousand, nine hundred eighty".