5440129978 has 16 divisors (see below), whose sum is σ = 8194386816. Its totient is φ = 2708687520.

The previous prime is 5440129969. The next prime is 5440130023. The reversal of 5440129978 is 8799210445.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626575 + ... + 635197.

It is an arithmetic number, because the mean of its divisors is an integer number (512149176).

Almost surely, 2^5440129978 is an apocalyptic number.

5440129978 is a deficient number, since it is larger than the sum of its proper divisors (2754256838).

5440129978 is a wasteful number, since it uses less digits than its factorization.

5440129978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 5440129978 is about 73757.2367839251. The cubic root of 5440129978 is about 1758.7458758872.

The spelling of 5440129978 in words is "five billion, four hundred forty million, one hundred twenty-nine thousand, nine hundred seventy-eight".